Left gpu on overclocked for over 3 hours. Did I fry it?

wekeed

Prominent
Jan 22, 2018
1
0
510
SPECS:

  • i7-7700k
    16gb ddr4
    asus strix gtx 1070 ti (using GPU tweak II, almost impossible to unoverclock it in my case)
    650 w power supply
    built the pc myself

So, basically, the title says the introduction. I come home to find my brand new build asleep. I wake it up, I find it has random squares on the display. The first thing that comes to mind is a restart. Very, very laggy, slow startup. I can't open any apps because the mouse pauses for 1-2 minutes and lets me use it for a good 2 seconds. I'm trying to unoverclock my gpu, meanwhile my display is going on and off. Rarely, the monitor displays "No signal". I put in my 1060 and the computer is working just fine.

If someone could explain a good solution, it would be greatly appreciated and not make me pay $300 something to get a computer repair to come out to my place.

Best regards.