Follow these steps:
1. Press Win + Pause keys - You'll get the System Properties
2. In the Advanced Tab, Click the 3rd Settings Button [Startup & Recovery]
3. In the Startup & Recovery Dialog, uncheck "Automatically Restart" in the System Failure frame and click ok.
Now, when your system crashes, you will get the BSOD, but the system will not restart.
Note the error message and post here or just google. EZ.