Try booting your computer into Safe Mode and then have a look in the Event Viewer
for any errors at the time of the blue screen errors.
To open the Event Viewer go to Start
> Control Panel
> Administrative Tools
> Event Viewer
. Alternately, go to Start
and type in "eventvwr.msc" (without the quotes) and press Enter.
Check in all the categories.
If you find an error that occurred at the time right-click on it and select properties. Copy the information in the window and post it back here. This will help us diagnose your problem.
Also, while you're in Safe Mode try running chkdsk:
Right click on the C drive in Explorer and go Properties > Tools > Check Now (under Error Checking). Check both boxes then click "Start Now". A message will pop up saying that Error Checking will run after you restart the computer. Restart the computer and Error Checking will run automatically after the restart. After itís finished it will restart into Windows automatically.How to start Windows in Safe ModeHow To Use the Event Viewer