Well i had a look at it last night. You're not going to believe this, but it not only POSTS, but also boots! :O Haven't had a chance to hook up a drive and see if it boots properly yet, but booted up and complained about a flat CMOS battery. I set the date and time, and had a bit of a look around CMOS setup, rebooted, and it came up with the normal Compaq boot screen, and booted all the way until it tried to find a boot device, which there are none.

Only problem is that one of the case release buttons, the one on the right is busted. How would I go about getting the case open? :-/