A while back, I experienced all manner of issues. Errors I saw were:
Interestingly, Linux didn't give a flying fuck and never even hiccuped once. This is why I initially thought I had an issue with Windows 8.1. Go Linux go.
I rebooted into some specialized memory testing to prove I had memory issues.
I was working on building an entirely new system and had started with a case and power supply replacement. Apparently I had damage to my earlier power supply, because all my issues magically went away.
During my recent Linux distributions experimentation, I noticed a few times that Windows 8.1 would no longer "see" a particular USB stick I was using. It would appear within the device list, would test correctly but would not appear in the left-hand pane in explorer.
I learned that this was because one or more of the distributions I was testing would, for unfathomable reasons, prep the USB stick strangely.
Why Windows wouldn't just offer to format the stick is unknown to me.
Windows > Windows 8.1 >
This is a fairly complete HOWTO for modifying Windows 8.1 so it's sensible and "oldschool".
I want to remove all of that fancy new shit and make it look and work more like the earlier versions of Windows, e.g. Windows XP.