All of a sudden my screen goes blank (but it's not the screen, I'm positive) and the PC makes a different noise (like going into stand-by) but I can't wake him up. It started yesterday, only after some time, now, it goes to sleep right away. I tried with a different hard disk, same think. So I guess it's neither software related, nor hard-disk related. Something in the rest of the hardware, any idea. Thanks a million