Graphics card not working due to Code12: not enough resources

Hey there people. I got a new motherboard for my Geforce 7950gx2. Intially my Acer motherboard based on the ATI express 200 series with a RC410M chipset had problem detecting the PCI express switch, which in result the card working half of it's speed. After getting this motherboard (Abit I-NH73; 630i chipset)and installing the drivers card worked properly but at the same time a new problem has arrived.

I turned the computer on few times it worked then suddenly after few turns the card doesnt boot up. I hooked it up to on board Video and saw in device managers that my card has Code:12 not enough resources. I unistalled and reinstalled the drivers. This temporarely fixed the problem but same issues after few good turns.

I like to mention that that both my rams are of different ram one is Acer 1GB 533mhz other crosshair 1GB 667mhz but its running as 2GB 533mhz. Could this be the cause of the problem? Also my Windows is OEM copy from Tafe that my brother law gave, which probably making my computer think it is on a workstation. I have seen some features in device manager such as 1394 host controller, floppy disk drive and lot other devices that to me seems like a home computer shouldnt have; thus hogging up resources. Also my keyboard works sometimes but doesn't in other times. This I believe is a IRQ resource problem too.

Also I tried upgrading the bios but it says CMOS flash failure at the start. I think I made a mistake in the installing procedure. I will get a friend to install it for me on the weekend who is good with comps. Read how some bios update fixes this issue and sometimes it doesnt. Hope it does for me and incase it doesn't its bad news, so I am asking for help anyways.

Dont know how to fix this issue. I know its not a support issue this time but merely a configuration and software issue. I would dearly like someone to help me in this as it is very frustrating and depressing.