I have a laptop which has "recently" turned into the proverbial baby, and refuses to sleep through the night, or for that matter, through some days. I'm a little lost when it comes to trying to debug what is causing it to wake for no apparent reason.
Powercfg tells me:
C:\>powercfg -lastwake Wake History Count - 1 Wake History  Wake Source Count - 1 Wake Source  Type: Fixed Feature Timer Expired (RTC)
So it appears something is set an alert to wake the system up? But how would I find out what?