Why doesn't it see all the RAM? Windows doesn't see all the RAM. Your version of windows has a RAM limit

The idea is to install RAM memory by inserting memory cards into the appropriate slots motherboard computer and turn it on. In fact, it often happens various problems, in which Windows does not see RAM. These problems can be caused by both hardware and software problems. In this article we will look at the most common reasons, causing a situation where Windows 7 or Windows 8 does not see the entire amount of RAM.

You are using a 32 bit version of Windows 7 or Windows 8

The maximum amount of RAM that 32-bit versions of Windows can “see” is 4 GB. Therefore, if you have more RAM, you should install the 64-bit version to take advantage of that memory. To find out what version of Windows is installed on your computer, open the “System” item in the Control Panel (or click on “My Computer” right click mouse and select "Properties").

In the “System type” item, information about the bitness of your version of Windows will be displayed. However, it is not only the system bit size that can affect the amount of available RAM in Windows.

Your version of Windows has a maximum memory limit

In addition to the bit depth of the operating system, the number of visible memory also affects what Windows edition you are using. For example, if Windows 7 Starter is installed on your computer, then the maximum available amount of RAM is 2GB, not 4. Windows users 7 Home Basic only has 8GB of RAM available, even when running the 64-bit OS. There are similar limits for latest version- Windows 8.

Maximum amount of available RAM memory in Windows 8

Memory is allocated for operation of the built-in video card or other equipment

Various computer hardware can use some of the system RAM to operate. The most common option is the use of RAM by integrated video controllers (integrated video card). But this is not the only option when hardware uses RAM.

You can see the amount of RAM used by the built-in video card and other computer equipment in the same “System” window. If memory is allocated to them, you will see two values ​​- installed RAM and available for use, which will be displayed in parentheses. Accordingly, the difference between them is that RAM size, which the devices took for themselves.

The motherboard has a memory limit

Motherboards also have limitations on available RAM memory. Just because all the memory modules have successfully fit into the slots does not mean that the motherboard is capable of handling all that memory.

To find out if the motherboard sees memory, go to Computer BIOS. To do this, immediately after turning on the PC and before starting to load the operating system, press the appropriate button for this; information about it is usually on the screen (As a rule, this is F2 or Delete). In the majority BIOS versions information about installed memory you will see already on the first screen.

If all the memory is visible in the BIOS, but not in Windows, then we are looking for a problem in Windows. If the memory is not displayed in the BIOS, then you should look for the problem at a lower level than operating system. First, you should familiarize yourself with the specifications of the motherboard (for example, find it on the Internet).

Incorrectly installed memory

If you are sure that the motherboard supports the entire amount of installed memory, but it still does not appear in the BIOS, it makes sense to check whether you inserted it correctly.

Turn off the power to the computer, open it, it is better if it is grounded. Remove the memory sticks and carefully place them back in place, making sure that the memory is seated correctly. You can also clean the RAM contacts using a hard eraser.

In some cases, for proper operation RAM needs to be installed in specific slots - in this case, look for information in the instructions for the computer motherboard.

Another way to diagnose a problematic memory module is to remove them one at a time, then turn on the computer and look at the amount of available memory.

Problems with the RAM itself

If you are having any problems with your memory, it may be the cause. You can use a RAM testing utility such as memtest86 or use the built-in Windows utility for memory diagnostics. You can also recommend testing the memory sticks one by one by installing them in the computer - this way you can more accurately determine the faulty module.

I hope this article is about possible reasons, for which the computer does not see memory, will help you solve the problem.

After upgrading to Windows 10, many users began to complain about the problem of using incomplete RAM. As an example, let's take a case from the Microsoft forum. When installing 6 GB of RAM in Windows 10 32, only 3.92 GB was displayed. The entire amount of RAM was inaccessible, or rather, the system simply did not see it. In some cases, reinstalling the RAM strips in places and cleaning the contacts helped solve this problem. However, in a number of cases this problem could not be solved.

Ways to configure display of all RAM on Windows 10

If you are faced with a situation where not all RAM is available on Windows 10 and you have not swapped the modules, you should follow these steps:

• Press “Win+R” and enter “msconfig”.

• The System Configuration window will open. Go to the “Download” tab. Click on the “Advanced options” button.

• A small window will open. Here you need to uncheck the “Maximum memory” checkbox.

• After saving the changes, you need to restart your computer and see how much memory is being used.

If Windows 10 does not see the full amount of RAM, you should remove the sticks from the slots and swap them. We also recommend cleaning the contacts of the RAM modules. To do this, take a rubber band and carefully wipe off dirt from the contacts.

If you insert the modules incorrectly, a post will occur when the PC boots. You will need to return the modules to their places and restart the computer. After Windows boot 10 32 bits you need to download the MemTest86 program and check the performance of the RAM.

If everything is fine with the modules, but Windows does not see all the RAM, you may be using old version motherboard firmware and you need to update the BIOS, as well as check some of its parameters.

• First BIOS parameter, who is responsible for stable work RAM is memory redistribution. In different firmware versions, this section may be named differently (Memory Hole Remapping, H/W DRAM Over 4GB Remapping, Hardware Memory Hole). Therefore, it is worth studying the instructions for the board in detail or finding a description for the version of the BIOS used.

The memory redistribution function transfers the address blocks used by expansion cards into the address space beyond 4 GB. Thus, it is possible to increase the amount of RAM (otherwise Windows10 will see 3-3.5 GB). For full support such a volume requires the use of 64 bit processors and 64's bit versions OS (or server versions of 32-bit operating systems that allow PAE physical address extension). If you have less RAM, be sure to turn off this option (Disabled), as problems with the RAM may occur. Enable memory redistribution – value Enabled.

• Memory settings for AGP video aperture are the amount of memory that the system shares with the video adapter. It is necessary for displaying textures and drawing pictures. This amount of memory may not be used by the system if it is blocked by the video adapter. There is only one way to enable it: boot into BIOS, select AGP Aperture size. Standard values ​​are 32 MB, 64 MB, 128 MB and Auto. We look at how much memory the video card has and set the required value by value. Often this is 128 MB. However, you can try each of the options to see which one gives the best result.

After making all changes to BIOS settings you need to boot into Windows and check if the entire amount of RAM is visible. If the system still does not see the RAM, you should try inserting other modules into the slot. It is possible that the old RAM sticks have failed or are defective.

To learn why the system does not see all the RAM and how to fix it, watch the video:

Some users continue to ask why they have, for example, 8 GB of RAM, but the system sees only 4 GB, or maybe even less. The answer to the question is very simple - this only happens with 32-bit systems. Whether you have Windows XP, Windows 7 or the current “ten”, but with a 32-bit architecture, it will not see more than 4 GB.

When viewing system properties you can see even less available RAM, why is this happening? The answer is simple, part of the so-called address space goes to servicing connected peripheral devices. The video card turned out to be the most useful. Although some devices do not even use RAM. The amount of address space depends on the chipset and other parameters, for example, BIOS, computer configuration.

The system does not see part of the RAM

The only way to get rid of this problem is to reinstall the OS to a 64-bit version. Then you will have more than 4 GB available.

There is also one trick to the system. Press Win+R and enter the command msconfig. Next, the “System Configuration” window opens. Go to the “Download” tab and click on the “Advanced options” button there.

Uncheck the box "Maximum Memory".

Solution option number 2

It happens that devices for the computer configuration take up some of the memory, but not very much. Therefore, there is no need to worry about this.

Another option is to make sure which one is supported system board. But this applies more to older technologies.

Still needs to be included in BIOS function Memory Remap Feature(also has names: Memory Hole Remapping, H/W Mem Remap And H/W memory hole Remapping). After that we install a 64-bit system. Sometimes these options are already enabled automatically on modern boards, so you can only make sure.

If you actually have less than 4 GB of RAM on a 64-bit system, then the Memory Remap Feature parameter should be disabled in any case. Not only will the available capacity become even smaller due to this, but some devices will also freeze, which especially affects simulation and gameplay.

It happens that the BIOS does not see the required amount of RAM, then it is worth updating it. This is a risky business and should be approached carefully and cautiously. Instructions for updating can always be found on the official website of the motherboard.

More materials:

If in BIOS installed modules are detected, but not in Windows, then you should check the manual for the motherboard. It usually says about connecting specific RAM modules, for example, which mode is better - single-channel or dual-channel. On the official website you can find out about the models that may suit you and the connection option.

If the system does not see the RAM, then this may be due to incorrect set value power supply, as well as due to faulty modules. Moreover, if one of the strips fails, then the system may not start at all, then you need to get rid of it.

Let's sum it up

So, we figured out why the computer does not see RAM, as well as a certain amount of it. I’ll describe point by point what needs to be done if this happens:

1. Reinstall the OS to the 64-bit version;
2. In System Configuration, uncheck the “Maximum memory” item;
3. Check the maximum amount of RAM on the motherboard;
4. Check the serviceability of the RAM modules;
5. Rearrange the RAM strips;
6. — instructions on the official websites of motherboards;

You can also clean your computer from dust and dirt. Wipe the contacts on the RAM modules and clean the slots. I hope this article helps you!

Random access memory is one of the the most important parts memory personal computer. While the user interacts with the device, this device stores the ones executed on this moment real-time programs. In addition, “RAM” is also responsible for storing the data that is being processed. central processor. Main feature RAM is that when complete shutdown When power is supplied to its board, all temporarily contained memory will be eliminated or partially destroyed.

Windows does not see RAM completely or partially - reasons

The most annoying and common problem is the situation when the user’s PC does not detect the pre-installed “RAM”. There may also be cases of “partial” shutdown, or display of only some part of the installed memory.

The main prerequisites and causes of such problems may be:

• using an operating system that does not allow the use of a large amount of memory;
• there are some restrictions on a certain amount of memory used;
• RAM is allocated to ensure the functionality of integrated or other equipment;
• the device’s motherboard has the ability to support only a limited amount of “RAM”;
• the board with this memory was installed incorrectly;
• failure of the RAM “plate” itself.

Each of these reasons can appear either individually or in combination with others. Therefore, it is recommended that every user have necessary knowledge and skills to troubleshoot similar problems that to a large extent affect the performance of the entire device.

Windows doesn't see all the RAM. Solution

If you encounter this problem, then the first thing you need to do is to thoroughly check the “entrance”, that is, the socket. To do this you need to do next algorithm actions:

On a note! In some cases, reconnecting the board allows you to restore its functionality.

Checking contacts for contamination

Another reason for partial or complete absence display the required hardware The PC may have dirty contacts. To check and clean them, you need to:

On a note! If necessary, you can “shuffle” the slats. This action can lead to the fact that an obsessive and unpleasant problem is solved. To do this, the RAM modules must be connected several times to different sockets.

The system does not “see” the “RAM” part

The reason that the installed OS does not detect part of all available “RAM” may be the use of an integrated video card. It looks like this.

In order to set a smaller amount of memory allocated for the integrated video card, you must:

System program limitation

Among other things, the restriction on the use of such important memory can be adjusted using system program"System configuration". To successfully eliminate it, you must:

Limitation in the motherboard itself

The motherboard module may also have a "RAM" usage limit. To find out reliable information about how much memory this can support the most important payment, you need to know it first.

To determine the MP model, you can use several methods:

If you do not want to install such software, you can use standard package Windows programs. To do this you need:

Reference! In addition, some online stores also post this information, but it is not 100% reliable.

Using RAM in insufficient capacity can lead to system slowdowns, crashes and inability to optimal performance total PC. Therefore, it is advisable to resort to using maximum quantity"RAM". In addition, the amount of supported memory directly depends on the bit depth of the operating system.

The maximum possible amount of memory in Windows 8 and other versions

As you know, different operating systems from Microsoft can support completely different amounts of RAM. In this case, in order not to get into an unpleasant situation with the installation too large quantities modules that simply turn out to be useless, you need to know about the capabilities of your own system. Table with the necessary detailed information.

Video - Windows does not see all the RAM, how to fix it?

from 270 rub.

RUB RAM becomes the cause of many troubles in a computer. For example, its quantity is one of key factors , on which the possibility and stability of games and various programs

. Over time, a small amount of RAM leads to the fact that we need to change or add additional modules.

580 rub. Such problems happen with both the main and added boards. In fact, there may be reasons for this great amount

and we will talk about them today.

RAM and operating system It is important to know that in terms of bit depth, operational Windows systems

are divided into two main types.

As a rule, most of our computers are installed with 32-bit Windows OS. This is the first reason why the computer does not see RAM. Please note that software

This type is designed to work with RAM with a total capacity of about 4 GB. The OS simply does not notice the rest of the memory, regardless of how many modules are installed on the PC and what their total volume is.

The solution to this problem is to install a 64-bit version of Windows, if the PC processor can work with it (which most modern chips can do).

You can get information about the OS version in two main ways:

If you have a 64-bit OS installed, but the computer still does not see the RAM, then the reason lies in another plane.

Limiting the amount of RAM by the operating system Developing Windows operating systems Microsoft company provided for some limits on RAM that could be used by a particular OS. Let's look at the values ​​using an example different versions

• Windows 7. Let’s immediately make a reservation that 64-bit versions are being considered (with the exception of “Win ​​7 Starter,” where there is none).
• Initial – 2 GB;
• Home extended – 16 GB;
• Professional – 192 GB;
• Corporate – 192 GB;
• Maximum – 192 GB;

A similar picture is observed in Win 8, although the thresholds there are much higher.

• Basic – 128 GB;
• Corporate – 512 GB;
• Professional – 512 GB.

Such limitations are quite normal, since cheaper versions of software always have more modest potential.

Therefore, if your computer does not see RAM, be sure to check the version of your OS.

Memory consumption for components

Almost every computer part requires a certain amount of RAM for correct operation. In particular, it is always used by the integrated video card, unless the PC uses a discrete alternative. And there are a lot of such components of a PC, each of which takes at least a small piece of RAM.

You can check this guess through the “System” menu in the control panel.

It specifies two RAM values:

1. Total (first digit);
2. Available (number in brackets).

IN in this case, calculating RAM consumption will not be the slightest difficulty. A simple mathematical operation that subtracts the available value from the total. The difference between them is actual consumption internal devices PC and system.

Volume limitation by motherboard

Not only the operating system can limit the amount of RAM, but also one of the components from which users least expect such a trick - the motherboard. It can have up to six slots for installing boards, but there is no guarantee that they will all work at once.

In this case, the same principle applies as the OS. The functionality of cheaper components is limited for the sale of expensive products.

If your computer does not see RAM, but the software can work with the installed amount, you need to go into the motherboard BIOS and see if there is a limitation. As a rule, you can see information about the available amount of RAM immediately after entering this menu.

If the BIOS displays the installed amount of RAM, but the OS still does not see it, then the problem lies somewhere in the software plane.

Incorrect RAM installation

Despite the apparent ease of installation, the RAM module can also be installed incorrectly. If the amount of RAM is not displayed in either the OS or BIOS, then the problem lies directly in the board. In this case, you need to carefully disassemble the PC and check that the device is installed correctly.