My computer was working great until a couple of days ago, when it randomly got a BSOD while I was playing online. Now the BSOD hasn't reappeared, but it now either restarts randomly, with no display on the monitor. Or it starts up into windows, after the splash screen, it beeps once and restarts and no more display on the monitor (power button goes orange). I have removed the RAM and put it back in after blowing the dust off as well as AVG/Spybot -S&D scans. It works fine for a while, but then the problem comes back. How would I fix this problem? Thanks.