How to Allow Programs to Wake Computer from Sleep
In Windows 7 it is possible to configure the operating system in a way that prohibits programs to wake it from sleep or hibernation. A portable computer may be pre-configured as such by default.
What does it mean for World Clock users? After some period of inactivity, which is set up in Control Panel - Power Options, your computer may go to sleep. If programs are not allowed to wake up your system they will simply not operate. If you have alarms configured they will be missed during sleep or hibernation time.
To allow programs to wake your computer in Windows 7:
- Go to Start - Control Panel - Power Options.
- Click on the Change when the computer sleeps.
Click on the
Change when the computer sleeps in Power Options
- On the next screen click on the Change advanced power settings.
Click on the
Change advanced power settings
- On the next screen, expand the Sleep node and the Allow wake timers node under it. Depending on whether your computer has a battery or not, at least 2 variations are possible. They are described below.
A System with Battery (a Portable Computer)
Set both settings under
Allow wake timers to
Enable
- Set both the On battery and Plugged in settings to Enable and click OK.
A System without Battery (a Desktop Computer)
Set the
Allow wake timers setting to
Enable
- Set the Setting to Enable and click OK.
