The device is not recognized by the connected computer. "USB device not recognized" error. What to do. Reinstalling Windows XP drivers for USB devices

When working with some flash drives, a message appears stating that the USB device is not recognized, and it becomes absolutely impossible to work with it. There are several very effective ways solve this problem and we will look at all of them.

And if then nothing helps, then it’s better to throw it away removable media information or check USB port. Let's get started!

Method number 1. Reinstalling controllers

On Windows 10 and above earlier versions this operating system It is possible to simply remove and install again various devices that are connected to the computer. These also include controllers responsible for the operation of removable drives.

To remove them you need to do the following:

• Search your Start menu for a tool called Device Manager. Open it.
• There, expand the section “ USB controllers».
• Click on the first one right click mouse and in the drop-down list click the “Delete” option. Do the same with all other controllers.

• Restart your computer. Once enabled, it will automatically check which controllers are connected and update their list in the Manager. At the same time, their configuration will be updated. After this, you can try to insert the flash drive again.

If nothing has changed, go to the second method.

Method No. 2. Driver Update

In some cases, updating the programs required for USB operation devices. To perform this operation, do this:

• Open Device Manager again.
• There, pay attention to whether there are devices somewhere that have a small yellow icon with an exclamation mark next to them. Also try to find there " Unknown device" If there are none, open the “Portable devices” section (these are flash drives).
• Click on an unknown device, a device with yellow icon and portable device, right-click and click on “Update drivers...” in the drop-down menu.

• In the next window, select " Automatic search..." Thanks to this, the system will independently find on Microsoft servers or its other sources the most suitable drivers and install them.

• Follow the instructions and wait for the update.

Method No. 3. Device power management

In many cases, adjusting something as simple as power supply also helps. Step by step this process looks like that:

• In the already familiar Device Manager, click on “Unknown device”, the device with a yellow icon or portable device connected to the computer, right-click.
• Select "Properties".
• In the window that opens, go to the “Power Management” tab.
• If there is a checkmark for “Allow the computer to turn off this device...”, uncheck it. And if it’s not there, put it on the contrary. Click OK and close all windows.

• Try reinserting the drive into your computer and using it. If that doesn't work, restart your computer and do the same.

Also, in some cases, turning off the power supply in the manner described above for a few minutes (5 or 10, no more) helps. After this, you need to return the original hardware configuration.

Method No. 4. Troubleshooter

Microsoft has its own utility that is designed to find and fix all sorts of errors related to the operation of anything that works via USB. It's called Fix It.

In Windows 10, it is built into the system initially, but on earlier versions you need to go to the official Microsoft website and click on the “Download” button. Then you will be provided with the most suitable utility.

After launching the downloaded file, all you have to do is click on the “Identify problems and install fixes...” option. Then the program will automatically find everything that could cause such a problem and fix it. You will only need to observe what is happening and follow the instructions.

What else can you do

Finally, if none of the above works, you can do the following:

• Just remove and reinsert the flash drive. Often such a simple solution helps solve a complex problem.
• Insert it into another port. If it works, it is better to replace the broken port.
• Connect it to another computer.
• Disconnect everything from all USB ports on the computer and insert only the USB flash drive, and try to do this in different ports.

If you have any questions, write them in the comments below.

If you Windows user, you may encounter a problem with the USB device on your PC. You may see this error when connecting Pendrive, webcam, printer or flash drives. This can happen for many reasons. Thanks to this article, you will learn how to fix: “ The laptop does not recognize USB devices".

This problem exists in all modern versions, such as Windows 10, 8.1, 8 and 7. In fact, there are different reasons this error.

Why doesn't the USB port recognize devices?

All PC errors and problems have some causes. Here's what causes this problem −

• Unstable or damaged USB controllers.
• Outdated motherboard drive.
• Lack of important Windows updates or any other services.
• Damaged USB drives.
• Incorrect power management settings.

Fix “does not recognize usb device” in Windows:

Every problem has a solution. Fortunately, there are many ways to fix problems. USB device on Windows. Let's try the most effective methods.

Method 1: Restart your computer.

One of the simplest and quick ways eliminating " can't recognize usb device" is to reboot the PC. Before starting your computer, unplug it for 1 minute. This will reset USB hub on your motherboard. If the problem occurs on the laptop, you should remove the laptop battery for 3-4 minutes and reinsert it. Now start your computer and see if the problem is still there.

Method 2: Find an undetected driver.

Scanning for undetected drivers is another one great choice to diagnose and repair errors " does not recognize usb windows device 7,8,10 " by using device manager. He has access to all internal and external devices, which electrify your system.

• Go to your control panel.
• Select Hardware and Sound.
• Click Device Manager.
• Open the action menu.
• Now click on “Scan for hardware changes”.
• Windows scans your hardware.
• Close the Manager and all Control Panel windows.
• Now check if your computer finds the driver by re-opening device Manager.

Method 4: Update drivers.

Sometimes updating device drivers will fix the problem in Windows. You can do this in different ways.

1. Check the manufacturer's website USB drivers. Find updated drivers. Download and install them.

Method 5: Managing USB Hub Power

Sometimes, to correct a mistake " Windows does not recognize the USB device“, you need to do the following.

• Open Device Manager again.
• Click "USB Controllers".
• Now right click on the USB Root Hub.
• Select Properties.
• Go to the Power Management tab.
• Now, uncheck the Allow the computer to turn off this device to save power.
• Now click "OK".

Method 6: Removing an unknown USB drive

If other methods do not work, you should remove unknown devices to resolve the error " computer does not recognize usb devices»

• First, open Run by clicking Windows logo+R.
• Enter devmgmt.msc and click "OK".
• Now click on “USB controllers”.
• Connect a device that is not recognized by the PC port.
• Find the icon called Unknown USB device(port failure).
• Right-click on it and select Delete.
• Restart your computer.

Method 7: Reinstall USB Drivers

Sometimes windows 10 does not recognize usb device, due to corrupted USB drivers, then you should try this.

Every computer and flash drive user has at least once found himself in a situation where the flash drive failed. That is, it is impossible to view the information that is stored on it. The flash drive does not work, the computer does not see the flash drive, files are either not written, or are not transferred from the flash drive, or it shows a discrepancy in the storage capacity of the storage device.

But first things first.

The computer does not see the flash drive

In fact, there are a lot of problems that affect the computer’s detection of a flash drive - even the version of the operating system itself.

And so, you inserted a flash drive into the computer, it is not detected. How does this manifest itself?

The computer tells you what you need " insert disk" Even when you did.

The computer says that the disk needs to be formatted because it is not formatted;

A data error has occurred;

The computer freezes when a flash drive is inserted;

The device is not recognized.

Now you will read a short instruction on how to solve the problem when the computer does not see the flash drive. But that doesn't mean that this instruction will help you 100%. If one method does not help, move on to another until the problem goes away.

Go!

The first thing you can do is check whether the utility sees " disk management» your flash drive. To do this, run this very utility:

Click Start → Execute (Win+R)→ enter → diskmgmt.msc→ press Enter. OR

Control panel → Administration → Computer management → Disk management.

In the disk management window, pay attention to what happens when you connect and disconnect a flash drive to the computer - does the disk disappear and appear again, or not?

As the most a good option- this is when the computer sees the flash drive, and all the partitions on it are in the “ OK" If this is the case, then do the following: right-click on it and select “ make the section active" You may need to assign a letter to the partition.

Well, in principle, this will be enough for the computer to see the flash drive.

Well, what if suddenly this utility displays the message “ Unknown" or " Not initialized", as well as one partition in the state " Not distributed", this will mean that the flash drive is damaged. Therefore, the computer does not see the flash drive. You need to perform data recovery (more on that later).

If you connect your flash drive through an extension cord or USB hub, then try connecting it directly. Also try connecting to all available USB ports. Next, as an option, you can turn off and restart the computer, disconnect other devices from the computer (well, except for the keyboard and mouse, of course), and then restart the computer. In this case, if the flash drive is detected and starts working, then the problem is obviously in the power supply USB ports, there is simply not enough power. There is only one piece of advice - replace the power supply with a more powerful one.

Option to remove old drivers

Use this option when the computer does not see the flash drive and writes “ Insert disc", provided that the flash drive is already inserted. This problem and more can be caused by old drivers that are available in Windows. For example, when you connect a flash drive to your computer, your PC turns off or reboots.

The reason is that Windows installs drivers for flash drives the first time you connect them to the port, and when you unplug the flash drive, the drivers remain in the system and do not go anywhere. Then you connect a new flash drive, a conflict arises, which is caused by the reaction of Windows when you try to use old driver, which was installed when connecting the first flash drive.

How to remove old drivers?

First, turn off the computer. Disconnect all memory devices from it and peripherals, accessories.

Turn on your computer.

Download the utility DriveCleanup.

We copy, depending on your Windows versions, 32 or 64 bit version drivecleanup.exe to daddy C:\Windows\System32.

Let's launch command line as administrator (right mouse button on menu " Start") and enter drivecleanup.exe . Click Enter and watch how the computer deletes all drivers and entries.

After the removal is complete, simply restart your computer, insert a new USB flash drive and Windows will install new drivers on it.

USB device not recognized

When you connect a flash drive, printer or any other device that connects via USB in Windows 7 and Windows 8.1, and you see an error, unidentified device- read these instructions and we will try to figure it out.

There are actually many reasons why Windows cannot recognize a USB device, and therefore there are also quite a lot of solutions.

The device is not recognized. What to do?

If you encounter a problem when you insert a USB flash drive and a message appears that you have connected an unidentified device when connecting any device via USB, make sure that the USB itself is in good condition. This will save you and me time. To make sure it's working properly USB plug You can try connecting it to another computer or laptop. If everything also does not work, then the problem is in the device itself. If it works, read on.

This method is for those cases where the device previously worked without comment. Everything was determined.

We disconnect our USB device, which cannot be recognized by the computer, we disconnect all devices that are in this moment We don’t need time, and we connect a device that is not detected to the rear panel system unit and see if the problem is resolved.

Correction of the message " Device not recognized" through Device Manager and USB Drivers.

Let's go to device Manager(click Win keys+ R) enter devmgmt.msc what field do we click on? Enter.

The connected device will most likely be in the list USB controllers or Other devices(and be called " Unknown device»).

If it is in the list with other devices and you are connected to the Internet, you can right-click on it and press the button update drivers.

If an unidentified device is still in the list USB controllers, then right-click on it, and on the Driver tab, click the button roll back or Delete.

Another option is in the USB properties in the “ Power management"Uncheck the box" Allow this device to turn off to save power».

You can also try for all devices that are in the " USB controllers» do the following:

Click " Update driver».

Click search for drivers on this computer.

Select a driver from the list of already installed drivers.

In the list you will see that there is a driver that is compatible with the device. Select it and click " Further" The driver will be installed, after which the computer may recognize the device.

On Windows 8.1 this problem meets with outsiders hard drives and flash drives that operate from a USB 3.0 port.

This problem can be solved in the menu for managing the parameters of the laptop power supply circuits.

To do this, go to the Windows control panel in the Power Options section, select the power plan used and click “Change” Extra options nutrition." IN USB parameters You need to prohibit temporary disconnection of USB ports.

The error message " USB devices o not recognized" when connecting via USB interface flash drive, printer, keyboard or any other equipment may be due to the influence of a number of factors. Therefore, it is impossible to suggest any one way to resolve the problem: you may have to try all the methods presented below.

Equipment diagnostics

First of all, you need to make sure that the connected USB device is working properly. Try connecting the equipment to another computer (if possible).

If the error appears on all machines, then you need to look for the cause of the problem in the device itself, the computer has nothing to do with it.

The ports may also be broken. If the equipment is detected on another computer or when connected to another USB connector, then you should check the port. If there is no second computer, you can try using next way troubleshooting:

1. Remove the USB device from the port.
2. Disconnect power from the computer by turning it off and unplugging the plug from the socket. Press the power key on the system unit and hold it for 10 seconds to relieve residual voltage.
3. Turn on your computer and try connecting the equipment again.

Don't forget also about elementary rules work with devices connected via USB interface.

Devices should be connected to the ports that are located on the back panel of the system unit, directly to the motherboard (this does not apply to laptops, they have all the ports on the motherboard).

Also, if you are using a splitter that has many devices connected to it, then unplug the unnecessary devices.

Checking drivers

If the equipment is working properly, then the cause of the problem is probably software error, which can be eliminated through the device manager. To open the manager, press the Win+R key combination on your keyboard and enter “devmgmt.msc”.

Unidentified equipment should be looked for in the “USB Controllers” and “Other Devices” sections. If the connected device is marked as "Unknown Device", right-click on it and select "Update Drivers". It is important that you have an Internet connection: the system will independently search for suitable drivers.

If the connected device is located in the “Controllers” section, and next to it you see Exclamation point, that is, there are two ways to fix the problem. The first is updating the configuration:

The second method is to prohibit the device from turning off to save energy:

If in automatic mode Drivers are not installed, you can reinstall them manually:

The list will display compatible driver, which is already installed. Select it and continue adding. After such a peculiar reinstallation, the problem with identifying the equipment will be solved. If it doesn’t help, download the device driver from the manufacturer’s website (applies to printers and some keyboards) and add them to the system manually. The procedure is the same, only you do not need to select from the installed ones, but specify the path to the downloaded driver.

Changing power settings

On laptops running Windows control 8.1 and Windows 10, the “USB device not recognized” error occurs quite often when connecting external drives and flash drives using USB 3.0. This problem is solved by changing the power supply parameters:

After a reboot, the problem with detecting USB devices on the laptop usually disappears. If we're talking about about a flash drive, sometimes it helps to use special software to recover removable media: