HDD is a pointless test at the moment, since Alex doesn't have a CD Key is this correct?
There are without a doubt hardware problems here, but I think
RAM is just as likely. Faulty
RAM can cause both the 7A Blue Screen of Death, and also HDD data corruption. I'm hoping that Alex is able to follow the instructions for the Recovery Console and get me that log of the 7A Blue Screen of Death, so that I can find the most likely cause to this problem.