Which error indicates that a system thread was unable to handle an exception?

The error that indicates a system thread was unable to handle an exception is SYSTEM_THREAD_EXCEPTION_NOT_HANDLED. This specific blue screen error signifies that a thread in the system encountered an issue while handling an exception, which could be due to various reasons, such as problems with drivers or other critical system components.

The presence of this error suggests that the operating system tried to execute a certain operation, typically related to a device driver that failed during execution. This failure can result in the operating system halting to prevent further damage, which is represented as a blue screen error.

Understanding this error is crucial for troubleshooting since it often points to underlying issues within software components or interactions between software and hardware, allowing technicians to focus their diagnostic efforts on the offending driver or system component that may be causing instability.