About to revert to the last known good configuration because the %1 service failed to start.

Details
Product: Windows Operating System
Event ID: 7021
Source: Service Control Manager
Version: 5.0
Component: System Event Log
Symbolic Name: EVENT_SEVERE_SERVICE_FAILED
Message: About to revert to the last known good configuration because the %1 service failed to start.
   
Explanation

A critical service or driver failed to start; therefore the system will revert to the last saved configuration.

   
User Action

Ask the person with administrative rights on your computer to check the Event Log with Event Viewer for details about the service or driver errors that preceded this one.

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