This is a friend of luciferga. I've worked extensively on his computer and thought that I may be able to clarify some things.
1) The hard drive is completely whipped; there is no partitions or anything of the sort.
2) Despite the OS, as long as it is windows based it WILL NOT install. I own a small computer store, so I was able to go through 98se, 2k, media, xp home and xp pro.
3) It is not his harddrive. I did a pull + stuck it in one of my own. I was able to install windows fine on my computer using his harddrive, but soon as it was put back in his, we had the same problem.
4) Its not the memory, or at least not the ram. I traded out his sticks of ram, so that issue was addressed.
Current goal: Install windows xp. No vista. Ignore vista. Xp.
Current problem: During install screen, after drivers + user agreement. When it displays the screen where windows is normally partitioned, instead of saying "empty space" or "unpartitioned space", we have "unknown disk" repeated continuously.
Conundrum: Linux can install fine, so it appears to be Microsoft specific.
Any ideas? (specs of computer are listed in first post)