Find out what wakes up your Windows 7/Vista from its sleep

@rem Get info about last wake
powercfg -lastwake

@rem Which device caused the wake up
powercfg -devicequery wake_armed

@rem More detailed info including time of sleep and wake
cmd /k wevtutil qe System /q:"*[System[Provider[@Name='Microsoft-Windows-Power-Troubleshooter']]]" /rd:true /c:1 /f:text

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