help 100% disk usage problem, win10 - common causes?

does anyone know the best way to solve this type of problem? or how to diagnose this problem? or the most common reasons for why it happens?

* happens on startup and just randomly from time to time

* solves by itself randomly

* the performance mointer thingy shows it's not any of programs cos none of them are high at all

been happening for like... i don't know whenever win10 first came out, i just never asked and could never find an answer

Across working with thousands of laptops, some just seem to have significantly slower disks. It could be a sign of disk wear or disk failure. When you open up Task Manager and click disk (I've attached an image to guide you)



what shows at the top when you're getting the 100% disk usage problem? My image shows 3% usage, which is quite normal/fine.

When you see it spikes to 100%, take a screenshot and upload here.

One thing it might be is your anti-virus software. This could be Windows Defender or another 3rd-party solution you've installed yourself.

In my personal experience, it has happend with a lot of AV. (Avira, Avast,Bitdefender)
Generally Defender itself sometimes runs at 100%. I should say that Windows doesn't like other AV and also its own isn't so funny to have.
Last time has happened to me was "Ottimizzazione avvio" (the process that optimize the start of W10) but normally ends a few moments later so i consider him not a malfunction.

It is common when antivirus programs are running including windows defender for disk usage to rise and on one of my computers it will stay high for a long period of time if I run windows defender in full mode.
There are many things you can do; these come to mind:
1) turn off or uninstall any program that is possibly causing the problem and compare before and after.
2) place the computer in clean boot
In clean boot all non-Microsoft applications are off on boot
https://support.microsoft.com/en-us/...indows-10.aspx
3) disconnect any attached hardware even printers and see the before and after
4) use windows performance recorder and make recordings contemporaneously with the high disk consumption
5) perform an in place upgrade repair to nearly eliminate any operating system/registry problems then compare before to after
Repair Install Windows 10 with an In-place Upgrade Windows 10 Installation Upgrade Tutorials
6) perform a clean install, reinstall files, and applications and compare before to after
Clean Install Windows 10 Windows 10 Installation Upgrade Tutorials

I had the same issue , it is either ur virus scanner (i had Avast was def it) or the SuperFetch process.

SuperFetch has to be turned OFF on SSD and ENABLED on HDD

Windows 10, 8 7: Enable or Disable Superfetch