Help, computer no longer boots widnows..

Today I got an unspecified system error randomly while watching vids on youtube, it came up a good 3 or 4 times then popped up with a blue screen telling me windows had shut down to prevent hardware damage or whatever, now I cannot get windows to boot at all, and I keep getting random errors including "IRQL_NOT_LESS_OR_EQUAL" I thought it was just windows fucking around so I tried to re-install it with no luck, this is the only error I have written down:
STOP: 0x0000007E (0xFFFFFFFFC0000005, 0xFFFFF8000117F83B, 0xFFFFFFADFF260F6E0, 0xFFFFFADFF260F0F0)
It recommends I "Disable BIOS memory options such as caching or shadowing." and also tells me to try a different video adapter. (which I currently can't find..
Any help would be appreciated, Thanks in Advance.

buy a new computer