Windows 10 computer 100% disk usage problem

[souljazk]

4GB is not enough, and def not "plenty". Get 8GB RAM. Your disk usage is high because you've run out of RAM and Win is swapping to the disk & back to RAM.

Also, while you're at it grab a SSD, you'll thank me

Sorry if I missed it but can you post your system specs (CPU, RAM, mobo) and also a HD-Sentinal report? Also what type and speed is your internet connection?

Can you replicate the issue in safemode? Have you tried to repair the OS using the DISM set of commands? Have you tried changing the SATA cable and making sure your on a SATA 3/SATA 6Gbps ports & that those speeds are enabled for the port in the BIOS ?

 

[SynicalFox]

I had this issue on my laptop, i7 with 8GB RAM and the HDD was your typical 5400rpm drive found in laptops.
HDD scan shows healthy drive, after formatting and reinstalling Windows 10 I found it was no longer an issue or only happened some days from a cold boot.

It seems it is sometimes Windows Defender that is performing a background scan, other times it was Superfetch which is a windows service. This issue likely won't ever happen on an SSD.
Try Hibernate over Shutdown as this could be a short term fix to the issue at hand. A Windows 10 Reset can help remove a program that may be causing the issue but won't remove your personal files. Then you just have to reinstall the programs

Windows 7 is definitely more reliable but outdated for some programs and espcially games (although you won't do this on most laptops )