The Blue Screen of Death 

the true "blue screen of death" is much more rare than the screen many claim it to be. For those who say it is the screen that says "fatal error" and "press ctl+alt+del" you are WRONG. that is a blue screen but it isnt the BSD. the real Blue Screen of Death give a lot more information and starts out with "a problem has been detected and Windows has been shut down to prevent damage to your computer." This screen means your computer is hosed. Completely.

the screen i have gotten many times was blue, however it was not The Blue Screen of Death

The Blue Screen of Death by M.P.H December 13, 2006