If I knock my table, which my desktop PC sits on top of as well as monitor, audio amp and speakers, then my speakers spit static and my monitor will get lines across it or even go black for a second or two - but it's not affecting my PC at all, it's running fine even during these glitches, and actually pushing/moving/tapping the PC itself doesn't cause any of the problems. I've turned the PC off and checked components inside, and everything is in place - the GPU is rock solid secure, especially, as is the RAM. I'm honestly at a loss as to what is causing these glitches.