Blue screen of death

"BSOD" redirects here. For other uses, see BSOD (disambiguation).
Not to be confused with Black screen of death.

The blue screen of death (BSoD) – or blue screen error, blue screen, fatal error, bugcheck, and officially known as a stop error – is a critical error screen displayed by many iterations of Microsoft Windows operating systems. It is used to indicate a system crash, in which the operating system reaches a critical condition where it can no longer operate safely. Its name comes from the blue colored background used predominately on the error screens found in the majority of Windows releases, which was changed to black starting with Windows 11 version 24H2.

Possible issues contributing to a BSoD may include hardware failures, an issue with or without a device driver, viruses, malware, and other factors such as intentional user action.

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