EDIT: Very First: are you able to get into safe mode without BSOD's?
few questions first;
1. Are you ever able to get to windows? if so how long until it BSOD's again? only when you do something, or even if it just sits without interaction?
2. any new hardware? How old is the Hard drive?
First i would try MemTest86+, or if you can get to the startup menu, Windows Memory Diagnostic
if RAM passes, do a hard drive test, after backing up your stuff of course
If the HDD test passes, i would try looking at software (some would say look at software first, but it's your machine) boot up the windows 7 install disc, and go to the Repair section, and open a command prompt, and run "sfc /scannow /offbootdir=C: /offwindir=C:\Windows" (assuming C...