Hi: I got only Blue Screen after turning on the computer this morning. I wait hoping XP for about five minutes, but it did NOT show up, ... only blue screen stuck, not any move at all. Desperately I hit 'F12' and XP finally came to screen. This scenario started to happen on and off from yesterday afternoon. Just wonder what's wrong with the PC? I never changed nor new program to install. Any idea, ... first of all, what's going on the PC? And what action should I take NOT to happen again? Thanks for your help in advance.