But
first, you need to turn on a setting in Windows. Open Device Manager, and
expand the branch containing the device (e.g., Keyboards). Double-click
your device, choose the Power Management tab, turn on the Allow this
device to wake the computer option, and click OK.
220 | Chapter 5: Performance
Next, put your PC to sleep and test it out. If you??™ve just enabled wake-up for
your keyboard, press the Space bar. Or, if you want to wake up the PC with
your mouse, give it a nudge.
If that doesn??™t do it, you??™ll need to dive into your BIOS setup screen, discussed
in Appendix A. Look for a Power or APM Configuration category, in
which you??™ll find settings like these:
Power Button Mode. This option lets you choose whether your power
switch shuts down your PC or puts it to sleep. Depending on your
BIOS, the setting you choose here may or may not be overridden by the
similar setting in the Windows Control Panel.
Power On By External Modems. This is also known as ???Wake On Ring???
(WOR); if you have an internal modem in a PCI or PCIE slot, you can
use this feature to call your PC with a telephone to wake it up. (Despite
the name, this feature won??™t work with serial-port or USB modems.)
Power On By PCI/PCIE Devices. Turn on this option to use the ???Wake On
LAN??? (WOL) feature, which lets you send a wake-up signal to your PC
from another PC on your local network. Some motherboards also
require that you install a jumper or use a specific type of network card,
so check your PC??™s documentation for details.
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