Ok back in October I broke my monitor by knocking it over, I replaced it for a few months with a tv I was going to sell. The coincidental part I will describe, never had any problems except on Windows 7 and if it had videos on a webpage, I would be fine till I scrolled and a video was on screen and the res on tv would change, if I did it too fast i.e zoomed past the video so the tv didn't have a chance to change res it would cause a display crash and recovery, Facebook was impossible to use because of people putting videos in their posts but gaming was fine, youtube was fine, any streaming site was fine. I then built a new pc and placed the board from the main pc into another case, with different hard drive, ram, cpu, optical drive ssd and power supply but put a 780ti and a sound card in it. Didn't have any problems for a week (new build took longer than I thought as ordered wrong motherboard) then had a issue with streaming video again, not same as before but if I selected anything but tv speaker sound i.e hdmi, if you attempted to use sound card it worked for a second then went fuzzy, or it worked no problem but lets say I opened a 2nd video audio cut out totally with a split second "hiss" I assumed sound card or graphics card. Took both out and ran it with onboard seemed ok. Friend wanted to buy pc so I sold it to him, hes now having a issue but different than before, sound is fine but gets random crashes, seems to be either when hes playing a game or loading something like spotify. He put his own graphics card in. I did tell him to check if the pins were bent on the board and he can't find any, and tells me sometimes he can game for 2-3 hours no problem and other times the whole pc crashes when a game or spotify opens. Hes using Windows 10 though and had to change to creators edition as the other one refused to update.