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How does Windows determine unexpected shutdown time?

Posted on 2013-05-21
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Last Modified: 2013-05-21
Hello Experts

Does anyone know how Windows determines the time that a system shut down unexpectedly?  I'm guessing Windows does some sort of 'heartbeat timestamp' somewhere that gets cleared during a normal shutdown, and if Windows does not shut down cleanly, upon restart it will detect this uncleared timestamp and determine that it was the approximate time of the unexpected reboot.  The reason for my asking is because I need to know what the time interval might be between the 'heartbeat timestamps'.

Thanks for any help in advance.
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Question by:Tuckrat
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McKnife earned 500 total points
ID: 39185760
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by:rindi
ID: 39185768
Most "unexpected shutdowns" are caused by system crashes, and they create dump files and events in the eventlogs. So either the time those dumps were created is output, or the time the eventlog was recorded.
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Author Closing Comment

by:Tuckrat
ID: 39185819
Thanks for the quick answer.  This is exactly what I was looking for.
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