For some reason the sound disappeared. Problems with the sound board or motherboard. Sound card control

Updated: 02/16/2019 Published: 2016 or earlier

Description

No sound after installing Windows
No sound
Sound doesn't work in browser

Cause

Driver not installed.
The audio service is disabled.
Incorrect system settings or system failure.
Disabled with a special button.
Incorrect installation of the update.
Virus.
Sound card failure.

Solution

The solutions to the problem presented below are arranged in order of frequency of occurrence and ease of implementation. If one method does not work, move on to the next.

1. Before doing anything, just restart your computer - in some cases this will be enough.

2. Right-click on “Computer” (“My Computer”) - “Manage”

* in Windows 10 or 8, right-click on Start - Computer Management.

go to the "Device Manager" section

check that there are no yellow warning signs. The subsection “Sound, video and gaming devices” should contain your audio playback device.

3. Click “Start” - “Run” (or win + R combination) - enter the command services.msc- "OK"

In the window that opens, find the “Windows Audio” service. Its status should be "Running". If this is not the case, double-click on the service, set the startup type to “Automatic”, click “Apply” and start the service;

4. If the sound is gone, check the functionality of the speakers or headphones, as well as the wiring. Check the tightness of the speaker or headphone plug. Try connecting other speakers or headphones to the computer;

5. The speaker icon in the lower right corner of the screen should not have a red prohibition sign:

otherwise, click on it and in the drop-down window click on the prohibiting icon;

6. Install or update codecs, for example, K-Lite Codec Pack or VLC media player;

7. Go to “Control Panel” - “Sounds”. Make sure the correct default audio device is set;

8. If your keyboard has a mute key (most often on laptops), try using it. It is usually located in the area of the F1 - F12 buttons. To press it, sometimes you need to use a combination with the Fn key.

9. Try playing with the sound utility settings. It is installed with the sound card driver and launched from the control panel (“Start” - “Control Panel”) or the system tray (icon in the lower right corner);

10. In some cases, checking your computer for viruses helps. To do this, you can use any antivirus utility, for example, CureIt.

11. If the system reports “The device is being used by another application,” try disabling one application from startup and restarting the computer. If sound appears, turn on programs other than the one that is causing the conflict.

12. If the sound disappears after the computer exits sleep mode, turn off the headphones or speakers - put it back into sleep mode - connect the headphones or speakers - turn it on.

13. If the computer is additionally connected to the TV via HDMI, make sure that the regular monitor and not the TV is active - otherwise the sound may be transmitted to the TV rather than the speakers. You can switch the screen using the Win + P key combination.

14. If the sound worked before, try performing a system rollback.

15. Use the Windows Error Troubleshooter. Click on the sound icon in the lower right corner - Troubleshoot audio problems. Follow the error resolution options that the system offers.

16. If you use monitor speakers, you must turn on the sound in the settings of the monitor itself.

17. It is possible that the sound malfunction may be associated with a broken sound card. To check this, you can buy an inexpensive USB sound card (about 400 rubles) and connect it to your computer (don't forget to install the driver for it).

18. If the methods described above did not help solve the problem, the only option left is to reinstall the system. It's not the most elegant method, but if all else fails, it's the way to go. After reinstalling the operating system, do not forget to install the sound driver.

The cause of the malfunction can only lie in two places: in the hardware of your computer, or in its software. In other words, the absence of sound is a consequence of a malfunction in the "hardware" PC, or this is due to the settings of the operating system, incorrect operation of some programs. It should be understood that the occurrence of such a breakdown does not depend on the OS or its newness. This happens in older versions, such as Windows XP, and in the latest Windows 8. It can also happen in Linux and other versions of the OS. Even if your equipment is the newest and most modern, the most expensive sound card, the highest quality speakers, you can still encounter a similar problem.

How to restore sound on a computer?

First, we must find out the very cause of the problem. We will determine the reason for the lack of sound in various ways, starting with the simplest and most basic ones.

To do this, we will follow, step by step, according to the following instructions:

If none of the above points helped you, then you need to use the latest option - call a technician for help, or take the PC to a workshop.

If the sound does not play or becomes bad.

In such cases, first of all, you need to remember what actions were performed on the computer the last time when the sound was normal. Perhaps you installed something new. In this case, the problem can be solved quite easily by uninstalling the program that you installed. In other cases, the problem may be due to the accidental removal of some important component in the operating system. Therefore, you should be careful about all programs that you remove. Follow all the recommendations for troubleshooting that were described above, most likely something will help. Always, in any unclear situations, you can use the help section, which is located in the menu Start.
When the sound is hoarse or otherwise distorted, check your audio setting. It may have gone wrong, or you may have accidentally added some sound effect that is now playing along with the sound.

It happens that the sound generally works normally, but in one specific program it is reproduced (or not reproduced) with poor quality. This can be solved by examining the sound settings in the program itself, or, as a last resort, reinstalling it, this should help.

Troubleshooting sound problems in Windows 7 and Windows XP

This add-on will discuss step by step what to do when there is no sound on the computer in the Windows XP and Windows 7 operating systems. So let's start in order:

Look in the bottom right corner of the screen for the location of the clock, which is displayed in the form of a speaker.

If this icon is missing, as in Windows XP, check the settings through the control panel located in the “Sounds and Audio Devices” section (instructions for Windows XP, point 4).

By left-clicking on this icon, you should make sure that the sound is on and the volume control is not located at the very bottom.

A window will open in which you need to mark whether the controls are enabled:

Volume in mixer Windows7, Vista;

Volume in the Windows XP mixer.

If you cannot change the settings due to the parameters being deactivated (they are highlighted in pale gray), the health of the audio device is checked in the task manager (step 3). If there are problems, you will need to reinstall the audio driver (step 6).

Before checking the settings and status of your sound card, make sure your speakers or headphones are turned on or connected correctly. The audio card contains a pin for connecting audio speakers, marked in green.

When installing more than one sound card on a computer, you need to ensure that the speakers are connected to the connector of the working card (which is used by the system). The wire connecting the speakers to the system unit must fit tightly.

It is best to check the performance of the speakers on another computer, or by connecting one of the suitable devices to the audio output.

To enter the “Device Manager”, click sequentially:
On Windows7 or Vista:

“Start”, then “Settings”, then “Control Panel” and “Device Manager”.

On Windows XP:

Right-click to open the context menu by clicking on the “My Computer” icon, selecting “Properties”, going to the “Hardware” tab and clicking “Device Manager”.

Your audio device should appear under Sound, video and gaming devices.

If the device is missing, or there is an exclamation mark next to it, the problem is a damaged or missing driver. In this case, the driver is completely updated or reinstalled (point 6).

To open the audio settings window in Windows 7 and Vista, you will need to click: “Start”, then “Settings”, “Control Panel” and “Sound”.

After this, a dialog box will open in which a list of all your devices will be visible. In this case, the default is one device:

The fact that the audio is working correctly is indicated by the corresponding inscription under the name with a green checkmark near the device icon.

If this window shows a different picture, characterizing obvious interruptions in the operation of the device, you will need to reinstall the driver (step 6).

On Windows XP:

Next, go to the “Volume” tab and make sure that the “Mute sound” checkbox is not checked. The mixer volume must be above zero.

If at this stage the settings are normal, but the sound on the computer disappears and does not return, proceed to the next step.

If it is impossible to move the mixer volume control and the presence of the inscription: “There are no sound devices” instead of your device, this serves as a signal that you need to reinstall the sound driver, or that the sound card is faulty (point 6).

To do this, open: “Start”, then “Settings”, then “Control Panel”, click “Administration” and at the end - “Services”. But a slightly different option is also possible.

“Start” – “Run”, then enter the command services.msc in the line, clicking “OK” to complete. A window will open in which you will need to find a service called “Windows Audio”.

If the service is started and running in the “Auto” mode, as is clearly demonstrated in the figure, you will need to close the window and move on to the next step.

If the service is disabled, you will need to enable it. After selecting it with the right mouse button, click “Properties” in the drop-down menu.

In the properties window, you need to do the following:

Set the startup type to “Auto”;
Click “Run” (for Windows 7 or Vista), or “Start” (for Windows XP);
Click “Apply” and then “OK”.

If there is no effect, you can proceed to subsequent actions.

If problems are detected in the device manager, or in the window with audio settings, indicating that the sound device is not working correctly, we are talking about a damaged or incorrectly working sound driver. You will definitely need to update it or reinstall it.

You can find the sound card driver on the disk that comes with the kit, or on the disk with drivers for the motherboard with a sound device integrated into the motherboard. A disk with drivers for the motherboard is provided with the computer at the time of purchase. Drivers must be suitable for your operating system (OS). For example, if you have Windows 7 and a driver disk for Windows XP, simply download the required driver from the card (motherboard) manufacturer's website.

Let's say you have a suitable package for installing the necessary drivers. In the “Device Manager” (“Control Panel”, “System”, “Hardware” and “Device Manager”), the currently installed audio driver will need to be uninstalled. If the above is missing, you need to find “Multimedia audio controller”, and then remove the audio-video codecs installed on your PC. To do this, you will need to call “Add or Remove Programs” from the Control Panel, and then click on restart the system.

Restarting your computer in Windows 7 will allow you to update the system automatically using technology Plug and Play. To install manually, you will need to insert the driver disc into the drive.

Let's try to look at installing drivers, focusing on Windows XP. The differences between the Windows versions are only minor differences in the appearance of the dialog boxes.

Once you open the Device Manager window, look for the section that has “sound” or “multimedia” in its name. To open the device properties, simply double-click on it. Having selected the “Driver” tab, you need to click the “Update” button. A menu will open in which the system will prompt you for automatic or manual installation. Click the second item and then the “Next” button:

After the window opens, check the box next to “Include next search location.” The Browse button will help you specify the optical drive with the disc. By clicking the “Next” button, find the necessary drivers and install them.

Upon completion, you will receive a system notification that the driver installation was successful and you can use the equipment. As a result, you will be pleased with the sound that appears. In extreme cases, this will happen after a reboot.

7. Check if the settings in BIOS are correct

There may also be no sound in Windows due to the integrated audio card being turned off in the BIOS settings. To start the computer, press the Del button. In some PC models these are the F2, F10, F12 keys. In the list of motherboard devices, you will need to find the sound card, and then make sure that the switch opposite is set to the “Enabled” position.

A common reason for sudden loss of sound on a computer is a broken sound card. However, before purchasing a new one, you should make sure that after applying the above options, no actions help.

The main thing to remember is that any problem can be solved and the solution may turn out to be much simpler than it seems.

It's hard to imagine a funnier situation than watching the next Comedy club episode on a PC without sound. However, this kind of computer malfunction is far from uncommon in user practice. A great example of this is the irrepressible popularity of questions about how to turn on sound on a computer. Yes, an “unauthorized boycott” declared on your PC is definitely an unpleasant surprise for many novice users. Especially when you consider that the problem with sound is very multifaceted in resolution. However, you, dear reader, are in luck again! Because in just a few minutes you will be able to “untie your tongue” on almost any Windows operating system. Well, let's not waste precious time - let's turn to the experience of professionals.

Diagnosis of computer “dumbness”

The answer to the question of how to restore sound on a computer must be sought in two directions. The fact is that most often the system “loses its voice” due to software failures. However, the sound may disappear as a result of failure of any hardware component. For example, an integrated audio chip. To understand what exactly is the reason for “silence”, you need to resort to a step-by-step action plan. Only after a thorough practical analysis will you be firmly sure what type of sound problem you have: hardware or software. However, let's not talk about the bad - everything should be resolved without the intervention of a specialist.

Step No. 1. Basic check

Tell me, how to turn on the sound on a computer if the speakers are not working or are simply not connected? Of course, no way! Extremely simple steps will help you avoid mistakes and wasted time.

First of all, you need to check:

Are the speakers connected to the PC and does the jack used correspond to the destination device?
Location of the plug if the speakers are powered from an electrical outlet.
What position is the volume control in? Perhaps it is twisted to zero.
Is one of the connecting cords damaged?

Often it is precisely such “platitudes” that push a person to take wrong actions. Therefore, be careful. Connect known-good speakers. Perhaps all your fears are in vain!

Step No. 2. Detect “secret” signs

If there is no sound on your computer, pay attention to the speaker icon located in the system tray. It may be crossed out, which means the playback device is deactivated. Move the slider up. If everything remains unchanged, move on to the next solution point.

Step #3. Windows services

It's no secret that the operating system has incredibly wide functionality. Management and control in the OS is carried out by special services, one of which is responsible for playing audio material. Fully customizing sound on a computer without the participation of Windows Audio is simply impossible. Therefore, it is necessary to check the current status of this service.

Using the Win+R hotkey combination, bring up the “Run” menu.
In the window that opens, enter the command services.msc. After confirming with the “OK” button, you will be redirected to a special “Services” section.
Find Windows Audio in the list provided.

In order for sound to be played and audio settings to be correctly recognized by the system, you must make sure that the service is active. That is, in the “Status” column the “Running” parameter is indicated, and in the “Startup Type” column the value is set to “Automatic”. You can make the necessary changes using the same right mouse button, placing the cursor on the item that requires appropriate editing.

Step No. 4. Driver that may crash

A crossed out speaker in the tray may also indicate the incapacity of the special software code that controls the audio chip. In other words, the sound on the computer disappears when the driver becomes inoperative.

Open the Start menu.
Then go to the “System” section.
On the left side of the window, select “Device Manager”.

It will not be difficult for you to discover the “culprit” of a problematic situation. In the list presented, a non-working device will be marked with an exclamation or prohibition mark. Update the sound driver using the service disk (software for the motherboard included in the kit). If you don’t have one, you need to go to the manufacturer’s official website and in the “Support” section download the appropriate software for the modification of your PC. It is worth noting that before installing the latest version of the sound driver, you must remove the old device management component.

Standard Windows functionality

When all your attempts to answer the question of how to turn on sound on your computer with practical actions have not brought any fruitful results, it makes sense to use the incredibly convenient “Fault Diagnostics” option. However, this functionality is only available in later versions of the Windows operating system. To launch this conflict resolution tool, you need to right-click on the conflicting device (indicated by the system with a special warning sign) and select “Diagnostics and correction” in the context menu. In a few minutes, the OS will notify you about the result of the work performed. It is likely that such a sound setting on a computer will become an effective salvation for a seemingly “deaf” situation.

Step #5: Settings

If you are convinced that the driver is installed correctly, and the service window of the sound device “Properties” displays the current status “Working normally”, then the solution to the question “how to turn on sound on the computer” should be sought using the following algorithm of actions:

From the Start menu, select Control Panel.
Go to the "Sound" section.
In the window that opens, right-click on the icon of the displayed playback device. From the context menu, select “Properties”.
While on the “General” tab, pay attention to the “Device Usage” item below. More precisely, the value in the checkbox. Apply the On option.

If there are several installed playback devices in the mentioned list, one of them should be assigned the “Default” value.

Step #6: Audio Controller

As a rule, most manufactured motherboards implement an advanced sound circuit. That is, the integrated audio chip can be controlled by a specially installed driver. Let's look at an example where the sound settings on a computer are done using the Realtek HD manager.

Click on the speaker icon (darker in color and slightly larger than the standard Windows volume control).
In the dispatcher working window that opens, you need to activate the icon in the form of a wrench (bottom part of the interface, on the right).
In the case when no sound is played, it is necessary to change the scheme from one value to another (meaning “Front panel of AC"97” and the item of the same name located just below).

Often it is this change that allows you to use the required audio channel.

Step No. 7. Unclear media format

There are often cases when sound playback on a computer is impossible due to a missing audio codec. This problem can be easily corrected.

Enter K-Lite Codec Pack in the search bar of your browser.
Then select the official source of the product from the list provided.
Download and install the necessary software.

Typically, this action gives the PC “omnivorous” multimedia capabilities. Rest assured: your computer will not be an exception to the rule.

Step No. 8. Software incidents

It happens that after installing certain software, the sound disappears, and after uninstalling the conflicting program it appears again. Some media players play a limited number of audio and video formats. This is the only reason why unlucky users often begin to panic. Therefore, before installing any program for viewing and playing multimedia content, you should refer to reviews of the product and a review of its tactical and technical capabilities.

Step No. 9. Look for the reason in the BIOS

As you know, the BIOS firmware manages and controls the operation of the entire hardware of a computing device. So installing sound on a computer may turn out to be an impossible mission when the audio functionality is disabled for some unknown reason in the BIOS. However, if you know the main rule when working with the basic system: “Do not touch or change unknown values,” you will successfully cope with the task.

To check whether the audio function is enabled in the BIOS, you need to do the following:

Enter your PC's Bios.
Depending on the version of the BSVV, the location of the sound “switch” may vary. However, the name "AUDIO" and the value "Enabled/Disabled", or "On", are unchanged.
Finding a tab with the Onboard Device Configuration option, or High Definition Audio, does not seem difficult. The main thing is to understand the seriousness of the enterprise and not make rash changes to the firmware. Since this is fraught...

Step #10: System Restore

If, after all the manipulations, the question of how to install sound on your computer remains unresolved, then it would be prudent to use the method presented below.

Go to the Start menu.
Enter “recovery” in the search bar.
Once the section you are looking for is displayed at the top of the service window, press Enter.
Select the required backup copy and confirm your choice with the appropriate key.

After a reboot, the system will regain the ability to play sound.

Step #11: Damaged or Missing OS Files

Sometimes the question of how to make sound on a computer is solved by restoring lost entries in the system registry. After all, very often the user, as a result of erroneous actions (usually in pursuit of free space on the hard drive), deletes important OS data. Ultimately, the inevitable happens - Windows loses full functionality. However, the would-be user does not always have the opportunity to roll back the system to its original state. By the way, the reason for everything is the same well-known reason - saving space on the HDD, that is, there are simply no backup copies of the OS, since “System Restore” is purposefully disabled. Nevertheless, even in such a situation there is a way out.

Press the Win and R keys at the same time.
In the Run menu, enter cmd.exe
· In the command window, type sfc /scannow.
Press Enter.

Damaged data will be restored from backup storage. It is likely that after rebooting the OS you will hear the audio greeting again.

Step No. 12. Viral infection

Malicious code not only steals and destroys user data. A virus program that has infiltrated the operating system environment may also be the reason why the sound on the computer is lost. In order to identify the pest, special software is required. Often, the antivirus program traditionally used for protection is not quite enough. However, today there are plenty of effective malicious code destroyers on the Internet. Therefore, you should not have any particular difficulties in the process of finding the necessary software tool.

To ensure that your PC never experiences sound problems, periodically check the official website of your manufacturer (motherboard manufacturer) to see if newer versions of drivers have been released.
When connecting audio playback devices to the PC system connectors, it would be a good idea to understand in more detail the correctness of the connection diagram involved.
Often motherboards have special contact pads that can be connected with special jumpers in order to reassign the audio output. Therefore, it is worth turning to the documentation of the motherboard and studying the problematic issue in more detail.
If all methods fail to meet your expectations (which is unlikely to happen), seek specialized help.

How to connect sound on a computer? As you can imagine, this is an incredibly large question. However, today you have learned a lot of information about what you need to do to “talk” your electronic friend, and what you should be wary of while using it. All the best to you and pleasant sound experiences!

The main components of a computer's sound system are a sound card and an audio output device - speakers (speakers) or headphones. Sound cards of modern computers are sold in two main categories:

integrated into the computer motherboard (on board);
separate (discrete) sound cards installed inside the computer system unit.

There are also cheap or very expensive (for professional musicians) external sound cards with a USB connector.

The widespread first option involves wiring the sound chip onto the motherboard. The more expensive the latter, the better the chip used in it. But even in this case, the sound quality in on board cards cannot be called high, although it is quite satisfactory for ordinary users. The influence of interference from nearby other elements of the system unit sometimes leads to the audio signal in such cards being distorted. In addition, if the processor is heavily loaded, the sound stutters.

Discrete sound cards have significantly higher audio performance. The audio signal is processed in them by a specialized sound processor. The delivery package of such a board includes special software that implements various acoustic effects. It should be noted, however, that the potentially high sound quality can be offset by ordinary speakers or headphones. It is recommended, in particular, to use speakers with wooden bodies.

Reasons for sound loss

Sometimes, after turning on or during operation, the computer may lose sound. Why is there no sound on my computer? The reason for the disappearance or distortion may be problems in its software or hardware components:

poor contact or failure of speakers or headphones;
incorrect audio device settings;
driver damage;
malfunction of the sound or motherboard (for on board version) board;
incompatibility with other programs or drivers;
incorrect BIOS settings;
exposure to viruses.

The easiest ways to recover

If the sound just disappeared, you should restart your computer. It happens that problems with sound are the result of an accidental failure. If the problem persists, make sure that the speaker switch is turned on and not pushed to its extreme position. Then visually check that the speaker (or headphone) plug is securely connected to the corresponding (green) socket on the computer. Poor contact with the jack can also cause the sound to wheeze. The functionality of the speakers themselves can be checked by connecting to another sound source - a player, smartphone, or another computer.

In the entire line of operating system versions in use - Windows 7/8/10, as well as in the outdated Windows XP, there is a universal tool - “System Restore”. It allows you to return your computer to a working state. If the sound was normal, for example, a day or a week ago, then you can “roll back the clock” and return to this state. The screenshot below depicting sequentially opened windows explains the return algorithm (“Control Panel” -> “System” -> “System Protection” -> “Recovery” -> selecting a restore point -> “Next”). After the computer automatically restarts, the sound should be restored.

Configuring Audio Settings

Inexperienced computer users could unknowingly turn off the sound from the taskbar (crossed out speaker or down slider). If this is the case, then you need to restore it, as shown in the screenshot (to delete the shutdown, click on the speaker icon).

Then you should go to “Start” -> “Control Panel” -> “Administrative Tools” -> “Services” and make sure that the Windows Audio service is automatically started and running; otherwise, restart it.

To check the audio settings, go to “Start” -> “Control Panel” -> “Sound” and make sure there is a green checkmark next to the sound device you are using. This means the speakers are working. Otherwise, click on the “Properties” button,

then open the lower list in a new window, select the “Use this device” option and click OK.

Reinstalling drivers

You can verify that the sound card is working in the device manager: “Start” -> “Control Panel” -> “Device Manager”. After opening the “Sound, video and gaming devices” list, the presence of a model (Realtek High Definition Audio) and the absence of an alarming yellow exclamation mark next to the line means that everything is in order. If you right-click on this line, then click “Properties”, a notification “The device is working normally” will appear in a new window.

Otherwise, you need to update or reinstall the driver. The same need sometimes arises after installing a new, partially incompatible device or program. To update, right-click on the Realtek High Definition Audio line and click “Update drivers” in the drop-down list.

A new window offers two ways to find updated drivers with explanations.

In some cases, the effect is achieved only after removing the existing driver (see previous screenshot) and installing it again from scratch. The Windows 7 operating system should automatically install the missing driver upon reboot (Plug and Play). If this does not happen, then the required driver can be taken from the disk included with the discrete sound card or motherboard upon purchase. Finally, as a last resort, the driver can be found and downloaded on the Internet on the website of the card or board manufacturer.

Sound or motherboard problems

These faults are complex and are detected using special equipment in service workshops. However, if you have the same computer in your office or home (for example, a neighbor), you can replace the suspected board with a known good one. After checking in this way, the problem can be solved by purchasing a new board.

BIOS Settings

It is possible that an inexperienced user, unwittingly, turned off the integrated sound card in the BIOS settings. To enable it, you need to restart the computer, enter the settings (by pressing the Del key before the system boots), find the Onboard Devices Configuration section and replace Disabled with Enabled. At the same time, keep in mind that if you are using a discrete sound card, this option must be disabled.

No sound may be due to insufficient antivirus protection. In such cases, you need to carefully scan the entire computer, possibly using other antiviruses. Once viruses are detected and removed, the drivers will most likely need to be reinstalled as described above.

Conclusion

Consistent application of the above recommendations will restore normal sound on your computer. Similar advice can be found in other articles for the search query “Why the computer sound disappeared.”

Updated – 2017-02-14

Lost sound on your computer? And God knows. This problem occurs quite often. And the most unpleasant thing is that such a nuisance is discovered at the most inopportune moment, namely when it is urgently necessary to listen to something. Many people begin to panic and yank the cords of their speakers or headphones, remove them, and then put the plugs back into the sockets. But most often the problem is not solved by this. Let us consider in order the most necessary measures to eliminate this problem.

The first thing it is advisable to do is to check whether our device is connected to the necessary connectors and sockets, and whether the wires are intact.

Check the speaker and headphone wires first.

If you have pets at home, it is possible that they could damage them.

For example, my cat really likes to chew on wires. I try to hide them all well so that he doesn’t get to them, but the other day I lost my vigilance and went into the kitchen for just one minute.

She returned and sat down at the computer, put on her headset to continue communicating with her friend, and...

I see on the monitor screen that she is saying something, but my headphones are as dull as a tank. I looked with suspicion at my cat, and he was sleeping next to the processor with the look of an angel.

I started checking the wires, and they were bitten in four places. And when did the bastard have time? In general, our communication was over. I had to go and buy a new headset the next day. Just in case, I bought two at once.

All headphones or speakers on the computer are connected with a green plug.

The connector on the computer's sound card is also green.

If the laptop or computer is an old model, then all connectors can be the same color - usually black or silver. Then you need to look at the designation opposite the connector. Laptops usually have small headphones.
The speakers are additionally connected to a 220 v power outlet.
Check the volume control on your speakers to see if it is set to minimum. It's better to set it to the average value.

If this is all right, then it would be good to check the speakers or headphones on another computer.

Let's check if the service is enabled WindowsAudio .

Opening – Start – Run .

In the line opposite the button Review write a command services.msc, which calls the window Services .

Find in column Name service WindowsAudio and check in the column State does it work?
If it is written Works, then everything is fine with the service.
If nothing is written, then double-click on the entry for this service and in the window that opens, on the tab Are common in the panel State turn on the button Start, and don’t forget to save everything with the button OK .

Any power surge could trigger mute the sound on your computer.

If you have Services everything is on, which means we check the settings of the sound devices.

At the very bottom of the Desktop on the right in the tray, find the speaker icon and double-click on it.

We check whether the switch (check mark) is opposite the entry Off, and whether the slider is lowered to the very bottom, i.e. volume at minimum.
If it is, then remove it. The sound should appear.
If you don’t have a volume control icon in your tray, then read the article

If everything is fine with the volume control, but there is still no sound, then right-click on the sound volume control icon and select from the drop-down menu Configuring Audio Settings .

In the window Properties: Sounds and Audio Devices on the tab Volume check if the entry is ticked Turn off the sound . If it is, then remove it.
Look Mixer volume . Is the regulator set to minimum?