Blue screen

[Spidertown]

I have a Systemax ('98) which has Windows 2000 Professional. I turned the computer on and there was a blue screen. It says to restart. I'm getting a message: STOP unexpected-kernel-mode-trap. If this is the first time (and this wasn't the first time) RESTART. If screen appears again run a system diagnostic utility supplied by your hardware manufacturer. In particular run a memory check. Check for faulty or mismatched memory. Try changing video adaptors. Disable or remove any newly installed hardware or drivers and/or software. F8 safe mode. I've got this message in the past and RESTARTING has done the trick, however this time it continues blue screen.