Windows 10: High Disk Usage

I am trying to figure out the cause of my extremely high disk usage. No matter what I do, the usage is anywhere from 80%-100%.

I've stopped and disabled the Windows Search, along with Superfetch.



I've also tried disabling "Show me tips about Windows" and it hasn't worked either




Here is how Task Manager currently looks





Any ideas on how to get the usage back to a reasonable %? I've tried everything I could find and nothing will work. Any help is appreciated.

Thanks,


:)

 

"Service Host: Local System" taking up every bit of disk space it can get and slowing down my computer. How do I fix this?

100% Disk Usage Windows 10 Service Host, Service Host High CPU Usage, Service Host High Memory Usage, Service Host Local System High Disk Usage, Service Host Local System Network Restricted, Service Host Local System Windows 10, Windows 10 Service Host CPU,
Wsappx High Disk Usage Windows 10.

See tutorial here:
svchost.exe service host: local system (network restricted)

 

Windows 10 high disk usage

Interesting. My CPU usage is fine. It's the disk that's high.

 

Well...I ran a Windows Defender and Malwarebytes Anti-Malware scan(s). Malwarebytes found a couple pretty severe things and Defender didn't find anything; both ran full scans.

Also ran a diskcheck and it completed successfully. As of right now I am not having the 100% disk usage constantly. Windows Search and Superfetch are both still disabled, along with the notification mentioned in my first post.