Blue Screen of Death

The Blue Screen of Death (also known as BSoD or Blue Screen), known officially as a Stop Error is the error screen displayed by the Microsoft Windows operating systems upon encountering a critical error, of a non-recoverable nature, that causes the system to crash. The term is named after the color of the screen generated by the error.
Possible Reasons
1. Hardware or driver related, causing the computer to stop responding in order to prevent damage to the hardware or data.
2. First replace the RAM and see. If it still exist then it can be drivers.