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Fixed: Windows 10 100% Disk Usage in Task Manager

Updated on Feb 18, 2019 by Brithny to Partition Manager

Read this page to fix Windows 10 100% disk usage in task manager, disk usage running extraordinarily high at the rate of 100%, also solve the system using 100 disk usage error.
Method One. Check Anti-Virus Software
Method Two. Disable Windows Search
Method Three. Clear up the Running Memory
Method Four. Reset Virtual Memory and Increase the Ram
Method Five. Upgrade Hard Drive

Have you ever met this situation: "Your PC ran into a problem that it couldn't handle, and the disk usage is nearly 100 percent".

Just like the picture shows, your windows 10 is at 100% usage. To fix the 100% disk usage issue, you must follow the procedure below.

disk usage is up to 100%

Check the Task Manager to find out the cause 

First, we're going to open the task manager and take a look at our disk usages. So as you can see if it is now 100% and is slowing our computer down.

  • Type task manager in the Windows search bar and select Task Manager: 
  • In the Processes tab, look at the "disk" process to see what is causing your hard disk 100% usage.

Fix Windows 10 100% Disk Usage Problem

Here are a few repair methods that have helped other users fix their Windows 10 100% disk usage problem. Simply follow the operation procedures to resolve Windows 10 100% disk usage problem.

Method One. Check Anti-virus Software 

Usually, the virus could be the main cause for loss of situations and 100%  disk usage is no exception. Your security software should be able to deal with this, whether it's a free app or a paid suite. 

At the very least, tools such as BitDefender, Avast, and AVG anti-virus should be able to scan your system drive and detect any problems, although with a heavy load on your drive already this may take a while.

Method Two. Disable Windows Search

There are two ways to disable Windows Search:  temporarily disable Windows Search, and permanently disable Windows Search. 

Temporarily disable Windows Search:

  • Right-clicking the Start button
  • Selecting Command Prompt (Admin)
  • Enter the following: net.exe stop "Windows search"

Permanently disable Windows Search:

Step 1. Press Windows logo key + R at the same time, and type in services.msc. 

type in services.msc to disable Windows search

Step 2. Locate Windows Search option, double-click it to enter its Properties window.

choose windows search option

Step 3. Change the Startup type to Disabled. Then click "Apply" and "OK" to save your change. 

click disable to finish 100 percent usage

Method Three. Clear up the Running Memory

Clear up running memory appropriately will low disk usage. Follow the simple steps to solve the 100% disk usage problem. First, download the free clear up tool - EaseUS partition magic software, then follow the steps.

Download Now

 Windows 10 is supported


Step 1: Launch EaseUS Partition Master. Select "Tools" and click "System Optimization".

choose system optimization

Step 2: Click "Junk File Cleanup". Then you can click "Analyze" to let EaseUS Partition Master find junk files on your PC.

choose junk file cleanup

Step 3: You can check and choose junk files and click Clean up. All of the selected junk files will be cleaned and deleted from your PC. Click "Yes" to clean up junk files.

Clean up junk files

Method Four. Reset Virtual Memory and Increase the Ram

Virtual memory is a combination of RAM and a portion of your hard drive. "When the RAM isn't enough to perform a task, Windows will temporarily store files in virtual memory, then swap them back to RAM when required."

Some computers' operating systems don't support more than a certain amount of RAM. For example, 32-bit versions of Windows can't use more than 4 GB of RAM, so installing more than 4 GB of RAM is a waste. If your computer supports installing more Ram, click here to Increase the Ram. If increasing the Ram is a waste, reset the virtual memory.

Steps to reset virtual memory:

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 check box 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).

Once you've entered your virtual memory values, click Set, then click "OK" to continue. 

Step 6. 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

Method Five. Upgrade Hard Drive

The hard drive that develops too many bad sectors on it would largely send your computer into a loop with high disk usage. Or, your computer hard drive might be too old to work properly, even there is plenty of unused space available. Still, your computer functions like a turtle and constantly reports 100% disk usage.

It's time to upgrade the hard drive. The EaseUS Partition Master introduced in Method Three can help you replace the hard drive in question with a new one without taking time to reinstall Windows 10. 

This is how you start:

Connect the alternative hard disk to the computer (If it is a new hard disk, please initialize it to MBR disk.).

Download Now

 Windows 10 is supported


Step 1: Select the source disk.

Open EaseUS Partition Master. Right-click the disk that you want to copy or clone. Then, select "Clone".

select the disk that you want to copy

Step 2: Select the target disk.

Choose the wanted HDD/SSD as your destination.

choose a suitable destination

Step 3: View the disk layout.

You can preview the disk layout and edit the target disk partition size. Then click "OK" to continue.


Step 4: Execute the operation.

Click the "Execute the operation" option and click "Apply" to start the disk cloning process.


Is the 100% disk usage issue slowing down your Windows 8.x or Windows 10 computer? Have any of these methods fixed the problem? Tell me and let's see if we can get it resolved.

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