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Windows 7 upgraded from vista

Microsoft Windows 7 home premium
January 17, 2010 at 17:18:53
Specs: Windows 7
PC won't wake up after i put in sleep mode - just upgraded to windows 7 from vista. Never had problem before.

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January 17, 2010 at 17:42:14
Is this a laptop or desktop?

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January 18, 2010 at 07:19:08
HP desktop.

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January 18, 2010 at 11:40:41
Kathy A,

On computers, power-saving modes like sleep & hibernate are aimed at notebooks to help conserve energy & extend battery life on such equipments. While they should work on desktops, they tend to come with issues on the side ... such as what you are experiencing.

If your machine BIOS does support ACPI, you may have problems if one or more of your devices or device drivers isn't fully compatible with sleep mode. To avoid power-saving woes on desktops: It is best NOT to use the function. The norm is to turn your computer OFF when you are going to be away from it for an extended period of time. Especially, if the machine is one that's typically only used sporadically,

However, if you want to use it on your desktop & your machine is ACPI-compliant & supports S3 Suspend Mode, make sure the system BIOS is up-to-date & ensure your chipset & other device drivers are too, as well as having updated patches for Windows installed.

If the above is good, go into your power option settings & make sure your selected power plan is "sleep" applicable:

From the Control Panel, go to Power Options & Change when the computer sleeps -- see below.

Turn off the display -- (set it how you want it)
Put the computer to sleep -- (set it how you want it)

Click on Save changes & then click Change advanced power settings.

Sleep: Sleep after -- (set it how you want it)
Sleep: Hibernate after set to Never
Power buttons and lid: Set to Sleep
Multimedia settings: When media sharing set to Allow computer to sleep.

Click on Apply & OK.

Also, make sure your mouse & keyboard is allowed to wake your machine up. There's a setting for this in "Device Manager" under the "Power Management" properties for the two devices. There's a box for "Allow this device to wake computer" that should be checked for the mouse & keyboard.

Here's a free sleeper tool testing sleep & hibernation if you are interested.

There's also the powercfg –energy command built into Windows 7 that's useful for troubleshooting sleep ussues. It should give a detailed power efficiency report of your PC.

P.S. the command needs to be run as Administrator from the CMD console.

Good luck!

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January 18, 2010 at 14:36:17
Sabertooth - Thanks for your help...I've got it working properly now.
Kathy A

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