The Blue Screen of Death (BSOD) is a windows error message generated to halt the system. BSOD can be caused by a software conflict, incorrect driver loaded or even Hardware failure. Here are some common troubleshooting steps and helpful links:
1. Intermittent BSOD messages may be resolved by running System Update and Windows Update
The system has lost access to the Hard Drive's boot partition during the startup process. This is normally caused by a wrong device driver loading, software corruption or an incorrect storage controller setting.
Additional information More solutions can be found here in Microsoft KB Link
4. "NMI Parity Error"
This error can caused by a hardware error or an incompatible driver loaded.
Symptom
Affected configurations and solutions
Some ThinkPad systems that contain the Intel PRO/Wireless 3945ABG Mini PCI adapter may experience a specific blue screen error called "NMI Parity Error".
Some ThinkPad systems that contain the ThinkPad a/b or a/b/g Wireless LAN adapter may experience a specific blue screen error called "NMI Parity Error" when power save mode in the adapter properties is set to maximum.