The power went down when I was playing a game on my Athlon XP system. Then when the power is back up, I cannot turn on the computer anymore. I can hear the power supply running and all the fans are moving, but the power light at the front of the case is not on. And the monitor is completely black (tested on several monitors). The CDRom drive light seems to stay on, but I've tried unpluggin the CDROM IDE cable, but same result. I can't even see the bios screen. Any idea what's wrong?