I built a PC a little over 2 years ago, nothing fancy.
I installed a 320g HDD formatted with 4 partitions.
This is not my primary PC, so I don't use it too often.
I run AVG to protect it. About a week ago, I contracted "Anti-Virus Live" which I thought was more of a pain than damaging. I ran Super-AntiSpyware, AVG, and followed some steps to remove it. Seemed like it was back to normal and running well again. (I don't know if it's related or not)
About 2 days ago, it blue screend and would not restart.
It would fail immediately after the Post.
I booted to the XP Install CD, thinking I could repair XP, but it informed me that the drive was not formated.
I set the HDD to Slave and installed it in another PC. It recognized the whole HDD (no partitions) and said that it was unformatted.
I ran Active@ Partition Recovery (I bought & registered a couple years ago). I ran a Scan and it found the drive, partitions, and I can see every file.

OK, how do I fix it? I tried recreating the mbr, but no improvement.