when that happened to me, it was because my gpu was fried.

THAAAANKS PHOTOSHOP.

it actually fried when i was updating windows too, and of course the computer crashed when it did cuz the drivers freaked out, so ya know, it fucked up my windows. i was then able to reinstall windows but any time it would try to load gpu drivers it'd just freeze.

but in your case, we'll hope it's just a fucked up connection somewhere along the line.