Sacred Haven of Debauchery

Of course, your system is clean and possibly even optimized, you have decent hardware, and everything works well. However, this doesn't explain the PC issues. Perhaps it's an evil spirit playing tricks, since your computer is actually good. After all, we ADMIT that problems can arise out of nowhere; anything is possible in this world, and life isn't always easy. They don't need any prerequisites or a problematic environment; everything is controlled by an unpredictable, evil computer genie.

which, however, shouldn't affect anything

This demonstrates your competence in this matter.