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How to Fix System and Compressed Memory 100 Disk Usage (7 Fixes)

Updated by Roxanne on Aug 30, 2021
Written by Brithny

System and Compressed Memory High Disk Usage on Windows 11/10

Hi guys, I'm having issues with a System process using 1.2gb of ram nearly all the time... Some times 3gb out of my 8gb of ram. The process is called System and compressed memory and comes up as full when I click the search online option... How can I sort this out? Thank you in advance. 

system and compressed memory high disk usage

System and compressed memory are responsible for the compression of files and folders and the management of RAM. If you messed up the virtual memory settings like changing the paging file size from Automatic to a set value, the System and compressed memory process start taking up 100% of the affected disk.

Windows 11/10 users have long been reporting to see this service occupies tons of memory, disk, and CPU usage when they check Task Manager. But there is no need for you to worry about this. If this amount of memory, CPU, and disk usage is really bothering you, here is something that you can do to fix the system and compressed memory high disk usage on Windows 11/10.

  1. Fix 1. End System and Compressed Memory Task in Task Manager
  2. Fix 2. Scan for Possible Virus/Malware
  3. Fix 3. Restart Your PC
  4. Fix 4. Disable the System and Compressed Memory
  5. Fix 5. Stop the Superfetch Service
  6. Fix 6. Check and Repair Corrupt System Files
  7. Fix 7. Reset Virtual Memory and Increase the Ram

Fix 1. End System and Compressed Memory Task in Task Manager

When you are faced with memory compression high disk usage problem, you should try to end this task in Task Manager First. Here are the steps to end task in the task manager.

Step 1. Press Ctrl + Alt + Del and select Task Manager.

Step 2. Select System and compressed Memory that is taking high CPU or Disk usage.

Step 3. Click "End Task" to finish the process.

Fix 2. Scan for Possible Virus/Malware

Sometimes, viruses and malware can lead to the System and compressed memory high disk usage. To get rid of this problem, you can turn to Windows Defender or some reputable third-party antivirus software. Here is an example of using Norton.

Step 1. Download and run Norton Power Eraser.

If a new version is available, Norton Power Eraser will check and download it.

Step 2. In the "Norton Power Eraser" window, click the "Scan for Risks" icon.

Step 3. Wait patiently during the process.

Step 4. After successfully removing the risk, click "Finish".

scan for viruses

Fix 3. Restart Your PC to Fix System and Compressed Memory High Disk Usage

Usually, a restart solves most of the weird cases, and System and compressed memory high CPU issue is no exception. Steps to perform a restart:

Step 1. Click the "Start" icon.

Step 2. Go to "Shut down or sign out" > "Restart".

restart pc to fix system and compressed memory

Fix 4. Disable the System and Compressed Memory 

If the solutions above don't work well, you can simply try this solution to get System and compressed memory high disk usage problem fixed with ease. Here are the details:

Step 1. Press Windows key + R at the same time to invoke the Run box. Type taskschd.msc and press Enter.

Step 2. Double-click on "Task Scheduler Library" > "Microsoft" > "Windows".

Step 3. In the Task Scheduler window, follow this path: "Task Schedule Library > Microsoft > Windows > MemoryDiagnostic".

Step 4. In the right pane, locate and right-click on RunFullMemoryDiagnosticEntry to choose Disable in the contextual menu.

disable system and compressed memory

Fix 5. Stop the Superfetch Service to Fix 100 Disk Usage

Superfetch is a Windows service aiming at improving system performance over time. But it can cause high CPU usage problems sometimes. You can stop this service to solve Windows System and compressed memory 100 disk usage error.

Step 1. Press Windows + R or type Run in the Windows 10 search box. Type services.msc into the "Open" box and click the "OK" button.

Step 2. Now find "Superfetch". Right-click it > select "Properties" > click "Stop" on the pop-up windows > click "Disabled" from the 'startup type' drop-down menu. 

stop superfetch

Fix 6. Check and Repair Corrupt System Files

Usually, when the System and compressed memory cause high disk usage, you need to do is to check your partition to find out the system error and fix it as soon as possible.  

Here you may try a free but professional partition management tool that allows you to effortlessly check and fix system errors with ease. You can free download EaseUS Partition Master Free and follow the steps to fix system error now:

Step 1. Open EaseUS Partition Master on your computer. Then, locate the disk, right-click the partition you want to check, and choose "Advaned" > "Check File System".

choose Check Partition

Step 2. In the Check File System window, keep the "Try to fix errors if found" option selected and click "Start".

check the pop-up instructions

Step 3. The software will begin checking your partition file system on your disk. When it complets, click "Finish".

finish partition check

Fix 7. Reset Virtual Memory and Increase the Ram

At most times, this System and compressed memory disk usage is caused by failed or failing RAM. You can check and reset RAM to fix the System and compressed high CPU error.

Step 1. Press Windows key + Pause/ Break key at the same time. Then choose Advanced System Settings on the left panel.

open the interface and choose advanced system setting

Step 2. Go to the "Advanced" tab, then click "Settings". 

click settings in the advaced tab

Step 3. Go to the "Advanced" tab again, and choose Change in the Virtual memory section. 

choose virtual memory section

Step 4.  Make sure that the Automatically manage paging file size for all drives checkbox is NOT ticked. 

manage file size to solve 100 percent usage

Step 5. Select your windows drive (the hard drive or partition that has Windows installed on it – usually C:), and enter an Initial size and Maximum size for your virtual memory:

select c drive and change the memosy size

  • Initial size: This value varies, depending on your computer. If you're not sure what value to use, enter whatever the number is in the Recommended category. 
  • Maximum size: Don't set this value too high. It should be about 1.5 times the size of your physical RAM. e.g., A PC with 4 GB (4096 MB) of RAM should have no more than about 6,144 MB virtual memory (4096 MB x 1.5).

Step 6. Once you've entered your virtual memory values, click Set, then click "OK" to continue.  Clear all your computer's 'temp' files. On your keyboard, press Windows key and R at the same time, then in the Run form, type temp and hit Enter. This will invoke Windows Explorer with your Temp folder open, showing you all the temp files on your computer.

clear all the temp files

Step 7. Select all the files in the Temp folder and delete them.

select the temp files and delete them


That's all about the solutions to System and compressed memory high disk usage problem. You can choose any of the solutions above to fix the error. In addition to check system file errors, you can also try EaseUS partition software to manage disk, increase C drive space, migrate OS to SSD.

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Updated by Roxanne

Roxanne is one of the main contributors to EaseUS and has created multiple posts on digital devices like PCs, Mobile phones, tablets, Mac, etc. She loves to share ideas with people of the same interest.

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Written by Brithny

Brithny is a technology enthusiast, aiming to make readers' tech life easy and enjoyable. She loves exploring new technologies and writing technical how-to tips. On her spare time, she loves sharing things about her favorite singer - Taylor Swift on her Facebook or Twitter.

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