I got this from the station that I partially work at. There upgradeing to a new audimation an just wanted to keep backups for the four stations. It orginally had like Windows 2000 Pro on it. I put in a bigger drive an installed Windows Data Center 08. Thing is that they all ways had trouble starting it as well. If you try to boot some of the post will show an you have to restart for the rest of it. It may take three or so tries to load the actual OS. I am experienceing it freezeing during a reinstall of the OS cause, I had to trouble shoot the network. I ran the memory check tool an seems that the RAM is fine, its all so ECC.