The infamous Blue Screen of Death also known as a stop error or Blue Screen of Doom or BSoD, is a colloquialism used for the error screen displayed by some operating systems ( in this case, Microsoft Windows ) when system detects a problem or encountering a critical system error which it can’t recover. In this situation, the operating system halts and diagnostic information is displayed on a blue screen. The Blue Screen of Death are usually caused by device driver error or malfunctioning hardware. … continue reading : Basic Blue Screen of Death - BSOD Guide.