Recently I've been having massive problems playing some games due to crackly distorted sound that gets worse and then eventually I get a blue screen with gibberish error codes. I think these were clues as to how messed up it was going to get. So I went out the other day and my computer was 'fine' before I left the house. Just idly ticking over and downloading some stuff for me. I come back and it's frozen on the screen saver, which won't go away. I restart and it just hangs at the opening motherboard screen. I tried restarting it a few times and it would hang at various times but it never really gets anywhere near loading windows so I don't think it's a software fault. A couple of times it's booted up with just a black screen and the motherboard makes 4 short beeps. I'm at a total loss. I took the ram out and blew in the slots and did something similar to the hard drive but no luck. All the fans appear to be working in it. I have: amd 3700+ 64 asus a8n-e motherboard 1 gig crucial memory ati x1900 win xp home It's about time I upgraded I suppose, but I'd still rather find out what's wrong with it and sell the bits that aren't completely broken. Thanks in advance for any advice!!