Help PC Won't boot with GPU powered on

Cooli167

Prominent
Jul 15, 2017
1
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510
Okay so a few days ago my PC was working fine. Last night windows updated, and now whenever I turn on my PC, horizontal lines cover the startup screen.

I've reset the Bios, reinstalled Windows twice, installed the latest drivers in safe mode, and attempted a (failed) system restore (Which usually works, and allows me to update the drivers, and then this problem goes away).

I'm at a loss at what to do next
My Specs.

MSI Geforce GTX 1070 Gaming X
4x 8GB Corsair RAM stick
MSI Z270 SLI Motherboard
Intel i7 processor
EVGA GQ 750 series PS
2 Stock Fans
Cryorig H7 CPU fan