I am unable to wake my computer from sleep using a bluetooth mouse/keyboard. I have a Samsung Series 3 laptop with internal bluetooth (not a USB dongle) with Windows 7. When I go to the power management tab under bluetooth properties, the "Allow this device to wake the computer" option is grayed out. How do I allow bluetooth devices to wake the computer?
Not all systems would allow this - as they go into low-power mode and they may be turning off the bluetooth radio in that low-power mode. Have you verified in the BIOS the power settings and bluetooth settings?
You might look through this:
http://support.microsoft.com/kb/266283
Do you have the latest bluetooth drivers installed?