Hit F8 after the BIOS screnn goes off and go into Safe Mode if possible. If so turn off Auto Restart.
Start>Right click on My Computer>Properties>Advanced Tab>Under Startup and Recovery click Settings. There uncheck the box for auto restart on system failure.
This will allow you to get 2 things from the BSOD. the Stop Error code. It will look like this:
0X000000ZZ where ZZ is a alpha numeric combination. Also a few lines down you will see in all CAPS a sentence or group of words that will also tell you what the error is.
Give us that info and we will be able to help you out more. Also after you do that if you wish to try you can hit F8 again and use the Last know good configuration to try and boot up.