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Kurt Tomicich
2012/11/13
Reference
Subject:
Scheduled Task - computer doesn't wake up
Category:
Power Management
Revision Date:
2012/11/13
Modified:
2012/12/10
Originator
Reviewers
Kurt Tomicich
Dave Belomy activity.
Scheduled Task is set to "Wake the computer to run this task" but it doesn't if the computer's in Sleep Mode.
Cause
By default, the ability to wake the system from sleep for a timed event is disabled on Windows 7-based mobile PCs. Programmed timed events do not wake the system regardless of whether the mobile PC is on AC or on battery power. However, you can change the
Power Options
settings to enable the wake timers.
Resolution
To change this behavior, follow these steps.
Note
Your mobile PC may wake up for tasks under some unexpected circumstance. For example, your mobile PC may wake up when it is in a bag or in a thermally constrained environment. We recommend that you evaluate the issues that may occur before you change the settings.
1.
Click
Start
, type power options in the
Start Search
box, and then click
Power Options
in the
Control Panel
list.
2.
Click the
Change plan settings
option that is next to the power plan that is selected, and then click
Change advanced power settings
.
3.
Expand
Sleep
, expand
Allow wake timers
, and then select
Enable
.
4.
Click
OK
.
Applies to
Windows 7 Enterprise
Windows 7 Home Basic
Windows 7 Home Premium
Windows 7 Professional
Windows 7 Starter
Windows 7 Ultimate
http://support.microsoft.com/kb/973454
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