Windows 10: Task Manager performance tab showing Disk 1 instead of CPU

I noticed this a few days ago. The CPU activity graph in the performance tab of Task Manager doesn't show CPU usage, but Disk 1 usage. Right click > View shows Disk is checked, but when I change it to CPU in that menu Task Manager crashes and reopens, the issue remains. I've tried restarting my PC, installing the latest Windows update, looked for a way to reinstall Task Manager without reinstalling Windows, but haven't found a solution. Thanks

:)

 

Task Manager Performance tab shows drive C: usage at 89% always.

I have a Windows 10 Pro system with all updates installed. The Task Manager Performance tab shows C: usage at 89% all of the time with only slight variations in the percentage. The Processes tab shows disk usage at about 40%. The only process using the disk
is System.

Disk defragmentation is disabled. File indexing is disabled. There are only five apps listed on the Startup tab including OneDrive and Windows Security Notifications. I have disabled the other three with no change in C: usage.

I have other PCs running the same version of Windows that do not have this problem. The only thing that is unique about the system with the problem is that C: is a software RAID 1 array consisting of two identical 4TB drives configured as RAID 1 in Disk
Manager. Is it normal for Task Manager to show continuous disk access for a Windows RAID 1 array? Any other suggestions? Thanks.

 

Task manager shows disk usage at hundred percent and performance is slow

Please do this:

1. Launch the Task Manager
2. Click Details
3. Click the CPU column header
4. Make sure the biggest load is visible at the top of the list
5. Use snippingtool.exe to create a snapshot of the frame
6. Save the snapshot to the desktop, then attach it to your reply.

 

Task Manager - Startup tab

Actually, I like your suggestion as a first step.

Unchecking the wrong thing in Autoruns can brick a system.