Question : Problem: Failure BIOS

I recently bought a new MOBO "GIGABYTE - GA-EP43-DS3L"  .. about a week ago..
I installed the following components on it..
1- 4 gig RAM.
2- 500 GIG HDD.
3- one COMBO DVD.
4- VGA NVIDIA 512MB.
5- ONE LAN CARD.
6- CPU Core 2 DUE 2.53GHz.
7- PWU 450 Watt.

I installed windows Server on it and it worked fine for almost a week.
today I wanted to install another ram sticks total 7 gigs, When I Press the Power button the screen is blank and no sound... Then after I removed the Ram sticks that I have loaded The PC stopped responding to Power button...

Tried to clear CMOS,,, It works but it gives a warning message " Warning : Backup BIOS Checksum Error!
BIOS Auto-Recovering..........................

And then keeps rebooting forever...


Is the BIOS Corrupted and no longer works?
Note:
MOBO Has Dual BIOS but none works.

Answer : Problem: Failure BIOS

yes ; most likely...DOA
ask a warranty replacement