Try disabling the automatically restart on system failure feature. Then you are able to read what messages appear on the blue screen and post that back here for some one to lol at.
Click Start Button
On the Start Menu click Control Panel
When the Control Panel window opens click on the System icon
The system properties window opens
Click the Advanced tab
In the Advanced tab window locate the Start and Recovery section and press the Settings button
When the settings window opens look for the System failure section
Remove the check mark from the Automatically Restart option
Click OK to Exit
alternatevily go to START RUN and type eventvwr and look for red crosses and post what is mentioned there.