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I have the problem that scheduled tasks will only cause the pc to weak up from sleep, if the PC has been put to sleep with the GUI manually.

However if I use the command line to suspend the computer the computer will not wake up and the scheduled task will not execute.

I already tried all of the below commands:

  1. %windir%\System32\rundll32.exe powrprof.dll,SetSuspendState

  2. %windir%\System32\rundll32.exe powrprof.dll,SetSuspendState Standby

  3. powercfg -hibernate off and %windir%\System32\rundll32.exe powrprof.dll,SetSuspendState 0,1,0

None of those commands works like the GUI does! I also tried forcing S1 instead of S3 sleep in the BIOS. This did not help either. OS is Windows XP. This is perfectly reproducible and very annoying.

How can I suspend the computer from the command line, so it wakes up when a scheduled task is run?

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up vote 0 down vote accepted

I have found a solution: psshutdown -d -t 0 works!

You can download it here.

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shutdown /h has worked for me for years. (C:\Windows\System32\shutdown.exe)

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Do scheduled tasks wake the computer afterwards? – Daniel Beck Apr 29 '13 at 7:24
@DanielBeck: Yes. Another thing is that in the last few months my Win8 x64 does not execute the task after waking up from hibernation at the prescribed time. I don't know if it's specific to my computer. Maybe I should file it as a separate question? I worked around it by scheduling twice (7:30 and 7:32) with Do not start a new instance setting. – homay2 May 30 '13 at 12:54

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