Slow shutdown - Power Service Reason

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gb777

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Dec 30, 2011
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Hello,
Several days ago my Windows 8 desktop started to take 15 min to shutdown. I didn't make any changes to my system. I found the POWER service is the cause. If I disable it, shuts down fine, enable it, 15 min to shutdown.

Anyone know why this would be a problem? Will I have any problems or limitations leaving this disabled? Any ideas why this would happen all of a sudden? Why would the POWER service cause a 15 min shutdown?

Thanks
 
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The_Prophecy

The_Prophecy

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May 16, 2006
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The Power service manages the power policies on your system. Do you hibernate the desktop at all, say in stead of powering it completely off at night? Perhaps try turning the service back on and disable hibernation instead?

To do this, open an elevated command prompt (Windows Key + X, select 'Command Prompt (Admin)') and type the following:

powercfg -h off

Restart twice to be sure and see how long it takes to close Windows each time.
 
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gb777

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Thanks for the idea.
No, I don't hibrinate or sleep.
The option you suggests (powercfg -h off) only removes the option from the shutdown list when pressing win8's shutdown button. Tried it anyway and same problem.

 
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The_Prophecy

The_Prophecy

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It both removes the option from the shutdown list, as well as the hibernation file (hiberfil.sys) in the root of the boot drive.

In any case, as long as you don't need to adjust any settings for your power profile (if the default profile is fine and you have never modified it, and never think you will need to modify it), go ahead and disable the service. I don't think it handles anything else.
 
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gb777

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I actually finally got this figured out. Maybe someone else has the problem and could use the solution. I think Microsoft knows about it as well but I never found any doc from them. I didn't have the problem for quite awhile after installing Windows 8 and didn't change or install anything new. I keep logs of everything I change or install. It must have been something in one of the windows updates. Even thru the 8.1 update it never changed.

The problem still exists on my machine. If I have the power service enabled it takes 20 min to shutdown. Sometimes when booting the hd lite stays on and it give 100% usage on 1 hd. I've always known which hd but could never figure out why. I could unhook that drive but I needed it.

I was setting up a test partition for the upcoming Windows 10. I installed Windows 8.1 from a 8.1 disk instead of the 8.0 disk I got when it came out. Seems it defaults the power options differently than the 8.0 disk. 8.1 defaults the power plan to high performance instead of balanced. The high performance option is hidden and you have to click on the twisty to see it. After selecting it, it moves to second in the list and hides power saver.

I was actually able to change it after booting with the power service turned on and have it shutdown quickly in that session. Usually I'd have to shutdown, wait 20 min and reboot for the disabling of the power service to work.

Hope this may help someone else.
 
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