Windows 10: Windows 11 unusual PC behavior

Hello,I'm experiencing an issue with my PC where the currently active window frequently loses focus. It appears that a program is briefly and rapidly launching, causing the window to deselect. For example, this occurred while I was composing this message, requiring me to click back into the window to continue typing.Could someone assist me with this issue?Thanks!

:)

 

Unusual hard disk behavior


I uninstalled Avast and switched to Windows Defender for the time being. Unfortunately that did not cure the weird HDD activity. You can clearly see the spikes every couple of seconds in this screen shot:





That pattern continues indefinitely until the PC is shut down.

These are the apps I've installed since the first of the year:





I don't see anything there that would cause constant disk activity, but I do think narrowing down possible causes is a good idea. I'm certainly open to suggestions. Thanks for your help so far.

 

Unusual hard disk behavior


I have power options set to never turn the hard disk off. So far the drive hasn't been shutting off, but the constant activity has continued.

This is my task manager processes sorted by most disk activity:





I also ran the Western Digital Diagnostics app and it passed the tests as you can see here:





As suggested I'm in the process of backing up my drive, but I would certainly prefer it not die on me. *Sad

 

Unusual hard disk behavior

Is this the screen you think would be more helpful?





It looks to me that an Avast Anti-Virus related process could be the cost for the weird disk activity.

EDIT: Actually this next screen shot seems to show "system" as being responsible for it: