Ever since I updated to Windows 11, the computer has been super slow because disk usage is always at 100%. It's using a ton of resources for nothing and I couldn't figure out which process is causing it. I already tried disabling indexing but it's still the same.
It could be Windows Update running in the background, your antivirus doing a heavy scan, or even your disk has a physical problem. Try opening Task Manager, go to Processes, click on "Disk" to sort it and see which app is eating up the most, then you kill it or uninstall it. If it keeps happening randomly, run a chkdsk (like this: open command prompt as admin and type "chkdsk C: /F") because it might be that your hard drive is failing.
Oh, that's really annoying! 😅 The Windows 11 update sometimes brings these disk 100% problems. First, open Task Manager (Ctrl+Shift+Esc) and go to the "Performance" tab, then click on "Disk" to see which process is eating up resources. Sometimes it's Windows Update trying to do updates in the background, or Windows Search (have you actually disabled it?), or even antivirus like Windows Defender doing a heavy scan. Try opening Task Manager and in the "Processes" tab sort by the "Disk" column to see who's causing the damage. If it's something with "Update" in the name, let it finish but it can take a while... like when I'm stopping at a gas station and need to check the tires, sometimes it takes longer than expected, you know how it is 😂
There are a few more things to try: disable SuperFetch/Prefetch because it sometimes goes haywire on 11. Go to Services (services.msc) and look for "SysMainSvc" and disable it. Another thing that helps is disabling Windows notifications and suggestions, because that eats up disk space pointlessly. You can also try disabling OneDrive File Sync if you have it, because Windows tries to sync everything automatically and kills the disk. Oh, and check if you have available disk space - if you have very little free space, Windows goes crazy trying to clear cache and stuff. If none of this works, consider restoring your computer to a date before the update, because sometimes the update corrupts something and it stays that way.
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