Good morning
I have built a system with:
Gigabyte X79 UD3
I7 4820K
ASUS GTX 770
2X4GB Ram Crucial Ballistix Tactical
1xKingston SSDNow V300 60 GB
Windows 8.1 Ent.

I use this computer for HTPC and for Gaming , the problem is that the computer occasionally loses the signal to the TV (I connect it through A/V receiver) , when it does that I have to press the power button to restart it , most of the times then the windows installation gets corrupted and prompts for windows repair.
If I leave it for some time it boots again normally.Now I've downloaded the latest bios from your page (F21e) and when it boots now brings up a screen that says that there were wrong bios settings and suggests to load the optimal settings and restart.
After that it booted normally but after playing a movie I switched to another movie and the same thing happened,lost the signal again.
Iknow its a bit messed up the way im describing the problem but ive reached dead end trying to solve the problem
Also id like to mention that I changed my PSU with a EVGA Supernova 650 GS believing that the problem was tht.
Anyway if you have any thoughts I d be happy to hear them.
Finally forgive my English (im Greek)