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.
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.