Pc freezes on debug code Ab

[zackdes86]

PC deatils:
Mobo.........GA Z77x-ud3h
I5-3570k
17""monitor samtron(temporary)
Problem:
when i turn on my PC .....monitor displays gigabyte mobo screen and then it goes blank.........so i checked the small display on the mobo ..and found out that it freezes on the debug code Ab......anyway out from this deadlock??

 

[hijacker]

Are you using onboard video?

 

[zackdes86]

Yes !!
i dot have a graphic card........

 

[zackdes86]

yes !!
i dont have a graphic card.

 

[zackdes86]

i have just started .my system by clicking on boot override
on my mob....o bios setup .and itz working fine....havent tried rebooting ......