Blue Screen When Installing Vista? Help!?

My computer is basically naffed. I reset the BIOS and booted from CD, deleted my partition and when I install Vista, it just blue screens while it’s expanding files!
Why has it came to this? Here’s the long story before hand so you know what could be the problem
My brother bought a new computer and gave me his old one. His old was having ‘BIOS’ problems. The computer had XP at the time and it used to crash when you installed things like Chrome, change firewall settings, clicked on restore points,and blue screened also when you tried booting from CD etc. We managed to fix that apart from it still blue screened when booting from a CD.
As I managed to get on to the computer, I installed my Wireless Belkin Internet adapter, got all the latest updates and managed to boot Vista from a disc fine, deleted the partition, install Vista, Done. I had the same problem as before where it crashed when you installed Chrome, changed settings, clicked on restore points, tried installing Adobe Flash Player, etc. We fixed this by taking the CMOS battery out and resetting the BIOS by doing so.
We got all the latest Drivers with DriverFinder and after they were installed, I rebooted the computer and then after it was all done, a few errors, clicked off them etc. BLUE SCREEN. So we had to re-install a fresh copy of Vista again. No blue screens as BIOS was reset, but after doing windows updates, half through installing, you’d get a blue screen and the drivers would be corrupt. ‘DRIVER_IRQP_NOT_LESS_OR_EQUAL’. I’d get this when Windows loads up too, but we managed to get on it again but it just was corrupted. We managed to re-install another fresh copy of Vista, and then we installed Windows 7 off an external Hard-Drive. Windows 7 was working great! Then after doing windows updates, exact same problem again, but this time it made things worse. It would only load windows once in a while, can’t get on the computer long enough to do anything!
PROBLEM NOW
I decided I’ll install Vista again, fresh copy, as we don’t currently have the 7 CD at the moment. I deleted the partition so no corrupt drivers, etc. But when Windows is expanding files, blue screen! My computer now has a deleted partition so it can’t load to Windows and it won’t install Vista! What could be wrong?
SOLUTION?
Does the BIOS need updating? Can I do it without getting on to Windows? Re-setting the BIOS (taking CMOS battery in and out) fixes a lot of blue screen issues for me so I guess it’s a BIOS problem?
SPECS:
Asus A8N-SLI SE motherboard.
2GB of RAM
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 4200 + 2.21GHz
GeForce GTS 8600 256MB graphics card.
The RAM is not faulty has it is 2 brand new sticks of RAM, both the same type and in the right slots.
The graphics card ‘GeForce GTS 8600 256MB’ is fairly new. My brother was getting problems similar to this with whatever graphics card he had in it (tried different brands, etc.)
Thanks in advance!