BSoD triggered by a memory stick

The Blue Screen of Death (also known as a stop error, BSoD, bluescreen, or Blue Screen of Doom) is a colloquialism used for the error screen displayed by some operating systems, most notably Microsoft Windows, after encountering a critical system error which can cause the system to shut down to prevent damage. According to Microsoft, bluescreens on NT-based Windows systems are usually caused by poorly-written device drivers or malfunctioning hardware. [from WIKIPedia]