To anwser the question on the original install, I downloaded (may the gods smite me XP) Win 7 and mounted the .iso file and installed using a virtual drive. I never booted off a disk or flash drive.
Pebbly: You might be right, I had to reinstall all the drivers when I formatted the drive a year or so ago but I'm fairly sure I downloaded all the listed ones. Either way, I can't access anything on the computer so I wouldn't be able to install the new bios driver anyways. Boot order is: USB, CD/DVD, Diskette Drive (?), NIC, HDD
notsogreymatter: Is there any way to run a system restore without having access to the HDD? RIght now I don't have many options.
PS: I updated the original post to make the problem more clear.