Black Screen on Boot Up - NO BIOS

[jobo789]

Okay so I have my pc and xbox hooked up to my TV but they share a HDMI cable. I swap from my pc, to the xbox, use it an hour and then go to swap back.

My pc boots, but the display is entirely black. No bios info or anything. I tried unplugging the HDMI and replugging, I tried using my VGA monitor and I obviously tried turning the pc off and on again.

Anybody got any suggestions?
Specs:
AMD FX8350
Nvidia 780 - updated to latest driver yesterday (Witcher 3)
Asus M5A87 MOBO
16GB Corsair Vengeance RAM
Seagate Barracuda 500GB + 1TB
Corsair 750w 80+ Gold

 

[jobo789]

Ok, so I opened it up, unplugged the GPU, put everything back and ita working fine now...weird.

 

[Fineus_]

I have a similar issue myself, let me know how you get on - and maybe some of the solutions in my thread might help you too?

I need to try the fixes myself this evening...

http://www.tomshardware.co.uk/answers/id-2752835/curious-issue-monitor-powering-started-cold-takes-restarts.html