Since you do not mention when you have a BSOD (on startup or during a session) i'll give you 2 possible solutions you would maybe like to try;
first in case of a BSOD during a session (and you are able to login still)
Goto Start->My Computer->right click properties-> System security (or something alike, please forgive me my translation)->Advanced TAB->Startup and recovery-> and on that tab something like Startup and recoverysettings. Deselect "restart computer automatically" (so leave it blanc).
If you have a BSOD on startup (and so you are not able to change the settings mentioned above) my personal trick is to use a camcorder. But maybe there are some seniors arround here (i know at least 1 who might be able to get you out of Trouble

)who knows a more conviniant trick
Good luck!
O, PS: Sometimes it even helps to hit the Pause key on your keyboard. But then again you will have to be very fast.