A friend of mine is having lock up problem, the PC always boots up but randomly locks up every couple of days, sometimes more. On two occasions, at least, the computer locked up while surfing the web, the monitor went black, and the PC started beeping until I turned it off. I also heard a grinding noise coming from the PC, but it disappeared when I turned it off. Grinding noise had to be the two fans or hard drive, there are no other moving parts. The PC started up no problem when I rebooted it. I opened the case and made sure all the fans were working, thinking it may be the CPU fan. I cannot determine where the noise is coming from (happens too randomly), I watched the CPU fan for a few minutes and it seemed to be running fine, as did all the power supply fan (though I couldn't see it, I felt it.) Was wondering if anyone experienced something similar with a Gateway or other PC, could help me determine what the issue is. thanks!!