100% disk usage on windows 10

Got 100% disk usage in Windows 10? Here are several tips & potential fixes! One is bound to help you fix this annoying Windows issue.


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Got 100% disk usage in Windows 10? So your computer is hanging and freezing. Same old Windows, right? Except you"re using a brand-new Windows 10 device; you"ve only had it a few days. So just what is going on?

Investigating, you discover that your system drive sầu is running at 100%. Surely this can"t be, right? Sadly, it is. The lathử nghiệm versions of Windows have a problem with the drives being overworked, which slows down the operating system. This issue affects both hard disk drives (HDDs) và solid-state drives (SSDs).

Several fixes are available for this. But first, you need khổng lồ trace the problem.


When the error was first discovered, only a few culprits were found. But as time passes, despite the 100% disk usage error being reported lớn Microsoft, more causes of this bug are discovered, not fewer.

Cliông xã the links above for each possible cause of the bug khổng lồ see how to fix it.

Once you"ve established that there is a problem, you have sầu several options available. Chechồng the following steps one at a time, checking the disk usage in the Task Manager after each.


lưu ý that even if you find a solution, a Windows Update could reset the changes you"ve sầu made. Bookmarking this page will help you find it in the future and run through the fixes again.


1. Slow Performance? Run Disk Check

This performance issue is most obvious when attempting lớn use Windows Search khổng lồ find a file or program, and anything else that requires the drive to vày some work (perhaps copying and pasting a group of files).

To establish whether it is a problem that is affecting you, when your computer next slows down, use Task Manager to lớn run a disk check.

First, press Ctrl+Alt+Del and select Task Manager (or right-click the Taskbar & select Task Manager, or hit Ctrl+Shift+Esc). cảnh báo that this may take some time to open with the drive being under strain.


why is 100 disk being used
On the Processes tab look for the Disk column. If you"re having problems with drive sầu performance, this will be at 100%, and shaded red khổng lồ indicate whether you have sầu a problem or not.

Problem sectors on your HDD can cause the 100% disk usage issue in Windows 10. However, using Windows" built-in disk check can fix this:

mở cửa Windows Explorer Select This PC Right-click on the C: drive sầu and select Properties > Tools Under Error checking clichồng on Check > Scan drive

Wait while the system scans the drive; a reboot may be required for a full disk repair. This should khuyến mãi with the error.


2. Update Your Anti-Virus if Windows 10 Disk Is Running at 100%

As with any performance issue, the first thing to vày is confirm that your computer hasn"t been infected with malware. Your security software should be able to lớn khuyến mãi with this, whether it"s a không tính phí phầm mềm or a paid suite.


At the very least, tools like Malwarebytes Anti-Malware should be able khổng lồ scan your system drive sầu & detect any problems. Note that with a heavy load on your drive already this may take a while.

If threats are found, use the software"s recommendations khổng lồ disthẻ them & reboot. Next, kiểm tra your drive"s performance again. Hopefully, you"ve sầu resolved the issue; if not, then malware wasn"t to blame, so read on.


3. Disable Windows Search for Improved Disk Performance

The next thing lớn check is whether the 100% disk usage error has anything to lớn vị with Windows Search.

A bug in Windows 10 results in a "tìm kiếm loop" that causes an increased load on the system drive sầu.

To stop this và prevent it from happening during your current session (until Windows is rebooted):


Right-clichồng Start Select Windows PowerShell (Admin) Enter net.exe cộ stop "Windows search"

That should solve most issue. If there is no change, even after rebooting, you can permanently disable Windows Search & Indexing.

Press WIN+R Type msc, then cliông chồng OK In the Services window that opens find Windows Search và double-clichồng to lớn open In Windows Search Properties find Startup type và select Disabled

how to lớn reduce disk usage
You can also cliông chồng Stop khổng lồ abort the service Clichồng OK to save sầu your changes. A few moments after disabling Windows Search, your Windows 10 performance should improve sầu considerably. If not, move sầu on…


4. Disable SysMain to lớn Fix 100% Disk Usage in Windows 10

Another Windows 10 feature identified as a potential cause of the 100% disk usage issue is the superfetch service. Since Windows 10 1809 (the 2018 Windows 10 October Update) this has been renamed to lớn "SysMain."


To prsự kiện this service from causing the disk usage issue, open another Windows PowerShell (Admin) & enter:

net.exe stop sysmain
disk usage 100% in windows 10 fix
Again, wait a few moments lớn kiểm tra whether this has had any effect on your computer"s performance. You should also run Cheông xã Disk in PowerShell:

chkdsk.exe pháo /f /r You"ll be informed that your PC must be rebooted for Chechồng Disk lớn complete, so make sure you have sầu closed all your applications first.

If this doesn"t work, it is likely that you"re experiencing a frustrating iteration of this issue that is simple lớn resolve.


5. Is Flash Causing the 100% Disk Usage Bug?

Flash remains one of the most vulnerable aspects of modern computing & should be disabled. Adobe killed off its multitruyền thông plugin in 2020, so there"s little reason to keep using it, especially as Flash seems to be one of the most common culprits for the 100% hard disk usage in Windows 10 with the Google Chrome browser.


To disable Flash in Google Chrome browser:

mở cửa Menu > Settings > Privacy và security Clichồng Site Settings Find Flash & mix the toggle lớn Block sites from running Flash Clichồng Back to lớn confirm, then restart the browser

The next thing to bởi vì is update to the lademo version of Chrome. In most cases this happens automatically, but if not just go to Menu > Help > About Google Chrome and wait for the update lớn complete.

If you can"t see any of the options, don"t worry. It simply means that your version of Chrome has already updated và no longer supports Flash.


6. Disk Usage at 100%? Switch Web Browsers

It may not be Flash that is impacting on your browser performance.

Another cause could be the browser itself, particularly if you"re using Google Chrome.


The obvious option is lớn choose a different browser. Windows 10 already has two browsers built in. You probably don"t want khổng lồ use Internet Explorer, but Microsoft Edge is an adequate replacement for Chrome.

Several browsers are available, some better than others.

Related: The Best Browsers for Windows


7. Is Skype Eating Disk Resources?

Another widely used application could also be causing your 100% HDD usage is Skype. In an era when online collaboration và video meetings is increasing, Skype is a likely culprit.

Since Skype has been more closely integrated with Windows 10, it is a little trickier to giảm giá khuyến mãi with. What you can vị, however, is stop Skype from running lớn help determine if it is the cause of the issues.

Press WIN+I khổng lồ open Settings Go to lớn Apps > Apps và features và scroll down to Skype

Is Skype causing 100% of disk being used
Head baông xã to lớn the Task Manager lớn see the change. You may also consider finding a Skype alternative. If the 100% disk usage bug tends to happen straight after Windows loads, it"s a good idea khổng lồ disable Skype from auto-loading. Under Runs at log-in, change the switch from On to Off.


Further issues with Skype can also be dealternative text with in this screen. You can Repair, Reset, & even Uninstall Skype lớn aid with your troubleshooting.


Xem thêm: Hệ Thống Mes Là Gì ? Vì Sao Nên Cần Có Hệ Thống Mes Hệ Thống Mes Là Gì

8. Resolve sầu PCI-Express Firmware Bug

Some drivers don"t run quite as they should in Windows 10. One that has been discovered khổng lồ be causing 100% HDD use is the StorAHCI.sys driver, which has a firmware bug. StorAHCI.sys intended for storage devices connected khổng lồ the PC or máy tính xách tay motherboard via Advanced Host Controller Interface PCI-Express.

To find out if this is the problem và rule it out:

Right-cliông xã Start and choose Device Manager Exp& IDE ATA/ATAPI Controllers Double-cliông chồng the AHCI Controller entry In the Driver tab select Driver Details

If the driver listed as C:Windowssystem32DRIVERSstorahci.sys, you could be affected by this bug. Next:


Cthất bại the driver details box In the Details tab select Device instance path from the drop-down thực đơn Right-click the value, then Copy. Launch Notepad & Paste the contents Next, press WIN+R and type regedit, and cliông xã OK Find HKEY_LOCAL_MACHINESystem CurrentControlSetEnumPCI & use the pasted string from Notepad to open the correct AHCI Controller, followed by the random number.

Here, exp& Device ParametersInterrupt Management MessageSignaledInterruptProperties and you should see MSISupported listed in the right-hand pane. Double-clichồng this, then change the Value data: to lớn 0.

Clichồng OK lớn confirm and follow the instructions lớn restart Windows.


9. Is Steam Maxing Out Your HDD?

Enjoy gaming & have Steam installed? There"s a good chance this digital delivery system is causing 100% disk usage.


Usually this is due to update delivery, causing the background downloader lớn get caught in a loop. Clear the Steam cabít to fix this.

First, make sure you have exited Steam. Where Steam is a likely cause of the 100% disk usage error, it may hang when you try khổng lồ exit. In this case, use the Windows 10 Task Manager lớn cthảm bại the software.

Next, open the WIN+R run box và enter

steam://flushconfig You"ll see a dialogue box, informing you that content will be deleted.


Clichồng OK to lớn proceed.

chú ý that games và saves will be retained, so there is no risk of them being deleted.


10. Disable Diagnostic Tracking in Windows 10

Finally, it"s worth considering the impact of diagnostic tracking in Windows 10. A feature that you might have sầu otherwise disabled for privacy reasons, it has been blamed for 100% HDD use on many PCs.


When it comes to lớn reducing your hard disk drive sầu usage, it"s quicker khổng lồ simply disable the DiagTrack service. If this is the source of the 100% disk usage error in Windows 10, you can stop the service launching.

However, lớn vị this you"ll need to lớn access Command Prompt in administrator mode.

Cliông xã Start and type cmd in the search box In the results select Run as administrator Input sc config "DiagTrack" start= disabled Input sc stop "DiagTrack"

11. Windows Update Can Cause 100% Disk Usage

As well as affecting changes you make lớn your PC when fixing the 100% disk use problem, Windows Update can also be a cause.

This usually only happens when Windows Update has a problem (which is typically due to a tệp tin refusing to download). You have sầu two options here:


Leave your computer alone---shut all your open applications and wait. Eventually, the files will tải về, but depending on how Windows Update is scheduled on your computer, it may require a reboot. Shutdown your computer---once you"ve sầu done that, restart và wait for Windows Update to resolve sầu the problem.

Once the update has finished downloading, it"s wise khổng lồ run it as soon as possible. Remember khổng lồ check any previous fixes for 100% disk usage before proceeding; as noted above, Windows Update can reverse these fixes.


12. Remix Your Virtual Memory

Virtual memory is a combination of RAM and hard disk space và can be responsible for overuse of your HDD. If there isn"t enough RAM to perform a task, the HDD is used khổng lồ supplement the RAM. Data moved lớn the HDD is then returned lớn RAM when required.


If you"ve made it this far and you"ve yet to solve sầu the 100% disk usage issue, it could be worth resetting your virtual memory.

Press Windows+Break/Pause On the right, find & clichồng Advanced System Settings
In the Advanced tab go to Performance > Settings Select the new Advanced tab Under the section labeled Virtual memory clichồng Change
Clear the checkbox for Automatically manage paging file kích thước for all drives Next, select the Windows drive (usually C:) and then Custom size Add an Initial size và a Maximum size; note both are measured in MB rather than GB Once the values are inputted, cliông xã Set then OK to continue
These numbers can be confusing, so with the first value, rely on the recommended option. For the maximum value, ayên ổn for a figure no more than 1.5 times your system RAM.


For instance, a computer with 4GB of RAM should have sầu no more than 6.5GB (6144MB).

The next step is to lớn clear the temporary files that have sầu been used in the previous virtual memory allocation.

mở cửa Run with WIN+R Enter temp & click OK In the temp directory, select all files with Ctrl+A and hit Delete

13. Activate High Performance Mode

Windows" standard power modes are prone to the 100% disk usage bug but switching khổng lồ high performance often overcomes the problem.

The downside, of course, is that your computer will use more power. Thanks lớn modern processor design this shouldn"t be a massive sầu issue. However, notebooks và desktop replacement laptops may take a hit on battery life.

To change to lớn high performance:

Cliông chồng WIN+X > Power nguồn Options In the nguồn và sleep screen cliông chồng Additional power settings Here, choose High performance, then OK

If this isn"t a displayed option, you"ll need to create your own custom power plan. Click Create a power plan, then choose High performance. Give the plan a name, tweak any personal settings you need then select it as a power plan lớn use.


14. Install the Lathử nghiệm SATA Drivers

Could a storage device driver be resulting in the 100% disk usage error?

Your Windows 10 computer almost certainly uses SATA connections for hard drives, SSDs, & optical drives. If the drivers aren"t up lớn date, the disk usage error can occur.

Avoid this by upgrading to lớn the lademo SATA drivers.

Right cliông xã Start In the Power User thực đơn select Device Manager Expvà Storage controllers Identify the correct controller for your SATA devices To update, right-click on each controller và select Update driver
Select the Browse my computer for driver software option Next, choose then Let me piông chồng from a danh mục of available drivers on my computer Here, choose Standard AHCI Controller & see how this impacts performance You may need lớn reboot Windows for this to take effect. Note that if it doesn"t work, you can still try this by checking the manufacturer"s trang web for a new driver. This can be installed using the instructions that accompany it.


15. Could Your PC"s Power Supply (PSU) Cause 100% Disk Usage?

There is a chance that your computer"s hardware is causing the 100% disk usage issue in Windows: specifically, the PSU.

If disk usage issues can be attributed khổng lồ excessive sầu disk activity, then it follows there might be a power-related cause.

100% disk usage has been spotted on Windows 10 laptops running on the battery. Once plugged inkhổng lồ the power adaptor, the issue resolves. Similarly, the problem has been shown to alleviate once a new PSU is installed in a desktop PC.

Chechồng our guide to new PC power supply units lớn help you choose a replacement.


16. Windows Help Is Causing 100% HDD Use

Another issue that has been traced to 100% disk usage in Windows 10 is the operating system"s built-in active sầu help tool. You"ll have noticed this feature that pops up when you"re doing something for the first time with useful tips & suggestions.


If you suspect this is causing a problem in Windows 10 with disk usage, you can disable it:

Press WIN+I to open Settings Here, select System > Notification & actions Find & disable Get tips, tricks & suggestions as you use Windows

17. Is WaasMedicAgent.exe Slowing Down Windows 10?

Incorrectly identified as a virus or malware, WaasMedicAgent.exe cộ (part of the Windows Update Medic Service) is a Microsoft system process that checks downloaded Windows Update files. If there is a problem with the data, the files are redownloaded – a process that could leave sầu your HDD at 100%.

To fix this,

Press WIN+R khổng lồ open a Run box Enter regedit then OK to lớn open Registry Editor Before proceeding, make a registry backup with File > Export, saving the backup somewhere safe In the browser bar, paste this path: ComputerHKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesWaaSMedicSvc In the right pane, right-cliông chồng Start & choose Modify Set the Value data to 4 then OK to cthua trận
Disabling the update medic is an extreme step lớn take. However, it is one way lớn avoid Windows 10 disk usage hitting 100%.


Disk Usage Should Rarely Be 100%

Put simply, there is little reason for your disk load lớn be anything cthua thảm to 100%, certainly not under normal usage. A slow computer is one with a problem, and if you cannot fix it by disabling a browser plugin, stopping services, or running your antivirus software, then the problem may well be hardware related.

Perhaps your drive sầu is getting old; it may be defective, or the cables may need replacing.

Try these fixes the next time your Windows computer slows down. Be sure khổng lồ check your Windows Experience Index periodically to lớn identify performance issues in need of immediate resolution.


How to Check Your Windows Experience Score on Windows 10 Want to figure out your computer performance & any immediate bottlenecks? Chechồng your Windows Experience Score on Windows 10.


Deputy Editor for Security, Linux, DIY, Programming, and Tech Explained, and Really Useful Podcast producer, with extensive sầu experience in desktop và software tư vấn.A contributor lớn Linux Format magazine, Christian is a Raspberry Pi tinkerer, Lego lover and retro gaming fan.


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