Boot your computer into Safe Mode (power on the computer and tap F8 immediately until you come to the Advanced Boot Options)
Select Safe Mode
Once you are in Safe Mode, click Start>Control Panel>System>Advanced Tab
Under "Start Up and Recovery" click on the "settings" button, then under "system failure", uncheck the box that says "automatically restart", click on "ok", restart your computer and let it boot up as it would normally and when the blue screen appears this time, it will stay on the screen and you can see what it says. Write down everything it says (exactly) and post the info. on your next post.