My 2 week old HP desktop has an issue of sporadic, frequent, and rather annoying '100% disk usage'. It shows in the 'Disk' column (Processes tab) in Task Manager. Needless to say this freezes all the processes in the system as it does my work, too (I'm an accountant).
The PC came with Free DOS 2.0 preloaded. I did a clean install of Windows
8.1, build 9600, installed all recommended updates from Microsoft, updated BIOS through the HP Support website. The issue didn't go away. I then turned off some services (synching with MS Store, One Drive, etc.) - no changes. The strange thing is that at the moment the Task Manager registers the '100% disk usage' point neither the CPU nor Memory usage seem to be overloaded. The freezes do not seem to be related to any specific software (Skype, my accounting software, etc.)
I did 2 complete scans with different anti-virus software. The system is clean.
I wonder if this could be linked to my BIOS settings? I read it somewhere that Windows 8.1 changes the settings in BIOS during installation. Perhaps, I should reset BIOS to Factory Defaults?