100% Disk Usage in Windows? Here's How to Fix It!

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Your computer is hanging. Same old Windows, right? Except you’re using a brand new Windows 8.x or Windows 10 device; you’ve only had it a few days. So just what is going on?

Investigating, you discover that your system drive is running at 100%. Surely this can’t be right? Sadly, it is. The latest versions of Windows have a problem with the drives being over worked, which slows down the operating system. This issue affects both hard disk drives (HDDs) and solid state drives (SSDs).

Several fixes are available for this, depending upon what exactly is causing the problem.

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47 Comments
  1. Souless [GD] says

    Day 182 – windows is still loading

  2. afekOwOgamer says

    As in 2020 april 11 it will still works
    before-4mb reading
    after-80mb reading

    on ssd

  3. Fhirnaz Ahamed says

    Trust me this is fixed my disk usage issue, highly recommend

  4. Reinaldo Padilla says

    Disabling the windows search did bring my computer down to 6% again. Thank you for this video. It helped.

  5. Ťao Țęñ βεllα says

    Windows 10 is so BADDD win 7 better

  6. Abdul Moiz says

    Just for the info that superfetch service has been renamed to SysMain.

  7. yeaboyaman says

    Thankyou sooooo much I’ve been trying to fix my pc for months

  8. Leon Petersen says

    Thanks!!

  9. HowToDo says

    Nothing worked.. did every step as u shown disk usage 99% cpu 16% memory 56%… And no apps running it shows system processes using disk

  10. xRageZ says

    It happens only when I update my 'Display driver' from 'Device Manager' and when I uninstall my 'Display driver' its fixes but by uninstalling that drive my resolution goes 800×600 and I there's no other resolution…

  11. TheCoolAngel007 says

    I fkin love you dude. storahci.sys was the issue for me! GJ my guy

  12. Anwyll Music says

    Here are 7 ways to fix the 100% disk usage bug on a MAC:

    1. There is no bug
    2. There is no bug
    3. There is no bug
    4. There is no bug
    5. There is no bug
    6. There is no bug
    7. There is no bug

  13. Surya Darshan says

    Why can't I find MSI Support ony PCI folder?

  14. Marco Medici says

    Service invalid ? Superfetch ?

  15. borjancs says

    Bro u get me into fixing c stage

  16. Joe Pence says

    Thank you soooooooooooooooooooooooooooo much.

  17. David Allingham says

    Never heard of PCI express firmware bug. Still don't know what it is! My laptop has been almost useless for months with 100% disc usage. Tried lots of "fixes". Nothing worked. I was very cautious with this fix being labelled as advanced. My knowledge of computing amounts to switching on clearing history and turning off! Anyway I followed your instructions. Got lost a couple of times but got there in the end. After what seemed like an hour rebooting…..it works!!! Disc usage now consistently <10%. Laptop like new. Thank you very much for sharing your knowledge.

  18. Joanne Beagan says

    It was the Windows Search service that was killing my laptop. Thank you

  19. The Pro says

    When i dont have anything opened my hard drive is 0% usage but when i open a game it goes up to a 100% is that the hard drives problem, or windows problem?

  20. Denver Dave says

    Your registry hack instructions for the IDE are vague, leave out a lot of steps, and are hard to follow.

  21. Samantha Kristoferson says

    Thank you very much… At first I was worried nothing would work, but I kept watching and when you got to the "Flash" section IT WORKED!

    Thanks so much.

  22. R and Co PRODUCTIONS says

    Ide ATA/ATAPI Method
    I have c:WINDOWSsystem32DRIVERSiaStorAC.sys
    Is that ok or should I change as you said

  23. Azizullah Khan says

    You saved my life. Thanks a lot god bless ypu

  24. Mohammad Mahmoud says

    That absolutely helped my PC to become faster, Thanx million, Sir 🙂

  25. Noiram Labisque says

    Thank you so much, it worked for me.

  26. mohammad Ebrahimi says

    i've tried everything still didn't work it was working perfectly before the power outage i had to change the power supply / the screen freezes after few minutes everything is working normally but the screen is frozen any ideas?

  27. calid free says

    nice

  28. Don West says

    Super Fetch not showing on my Win 10 system; nothing else seems to help Task Manager at 33%(I have 3 hdds), in Task Manager Performance disk activity remains slammed at 100%

  29. Ilham F R says

    Please help! Do yall have a solution of disk usage 100%??? I got this problem when i was installing GTA 4 that i downloaded from ocean of games. Is it a virus/malware???

  30. Liz Snider says

    thank you so much my girlfriends computer kept saying there was 100% disk space even though ik it wasn't all getting used up and i did the step at 4:50 the pci express firmware bug and it completely fixed her disk thank you so much

  31. epic face forever says

    thank you so much

  32. Silver Surfer says

    Resolved through net.exe stop superfetch in cmmd prompt i just cant thank you enough

  33. Anwar Khan says

    I had the same issue 100% active time. I format all the disk and in windows I all partitions and made new then my problem is solved

  34. Cr33perLord says

    i clicked the end task button on SysMain and it stopped it from being used up so much. But i wanna know if i was able to do that or if i just screwed something up

  35. Ifan Nurhidayat says

    I have repeatedly corrected this problem even after 2 months this problem has not been resolved in any way or in this video someone help me!!!!!!!

  36. Jenana Banana says

    Did this in 2020
    Superfetch is under a different name it seems
    SysMain
    Tricky, tricky Microsoft

  37. OislamforallO1 says

    I had that issue and I almost fixed it. My laptop is 6 years old. But It is i7 and 6 gb of ram. According to what I've read, old hdd hardisks are weak to handle today softwares. So, it is better to stay with old "operating system". The 100% diskusage happened to me a lot on windows 10, so i thought there's something wrong with that. This is a role, the best opearting system is that comes with the laptop its self, which is windows 8.1 in my case. So, I formated my laptop back to windows 8.1 home, not pro, because pro versions are having more featuers you don't need, also Old hardware can't handle them. This is my advice and I hope it helps you. Now my hardisk usage hits 100%, but when I check task manager I figuerd that the secuirty program is running a scan or there's a real pressure on the hardisk, now it makes sense.

  38. Josh Field says

    Wow it actually worked

  39. WoodenCreationz says

    4:47 fixed my Windwows 10 100% DISK!!!! TY so much!

  40. Hunter Boy says

    thanks bro…..

  41. Gaming KenHQ says

    How to fixed that problem 100%bug easy replaced your hdd in ssd

  42. Dagobu says

    I can't even log in to my coputer anymore to even try any of these things.

  43. P0tabe 0 says

    thanks

  44. Nathanlivegamer :D says

    6:40 solved my problem for today

  45. Recoil Disruptor says

    It was…. Windows Search 😬👀

  46. Romangelo says

    6:35 fixed it for me.

  47. Isoul says

    Still no solution

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