Fatal1ty Z170 Gaming-ITX/ac not booting

Hey guys!
It works, sort of! BUT: If I tell you what fixed the problem, you start thinking that I'm gone crazy.

Ok. I'll organized a beeper/pc-speaker to check if there are any error codes or whatever.

So, I connected the beeper and nothing for 20 seconds. BUT then, suddenly a BIOS prompt and everything worked as it should. I was thinking... "what the ..?"

I thought, ok it works! and unplugged the beeper. Not a good idea, because the screen stayed off again.
Beeper plugged: Booting system and everything ok
Bepper unplugged: Black screen!

So the beeper is a must have component and without it nothing works!

Seriously, I think there is an other reason, but... hey it works.

Next step: Rebuilding the system in it's case and see if it still works ;)

It's just what I've observed.

I know it is scary and there has to be another problem!!!? I'll investigate.

There is an operating system on the 950 pro now. There was no OS installed, because booting hasn't been possible.

I've installed Windows 10 64bit on it for now.
Nothing else at the moment.

Edited by RoterFux - 06 Oct 2016 at 12:55am

Of course it was a loose cable or something else and not the beeper. I disassabled the whole thing again and rebuild it.
If the gpu is not perfectly placed in it's slot, it's a problem. Thats a thing I know. The beeper ... ya. crazy, but as expected not needed, obviously ;)

Everything works now. So in the end it was a PEBKAC situation from the beginning.

I guess why the "beeper fixed the issue" is a mystery yet to be solved ... maybe another time. ;)

So sorry to bother you guys and thanks a lot for your help!!!