My system is not resuming from Sleep Mode, what could be the problem?
Some USB devices seem to prevent certain systems from resuming from Sleep Mode.
There are two options that may resolve this issue in Windows Vista or Windows 7.
Click Start and type Device Manager and press Enter
Expand the Mice and other pointing devices
High light your listed mouse and right click
Click on Properties
Go to the Power Management Tab
Uncheck both boxes and press OK
Open the Control Panel and Select Power Options
Select Change Advanced Settings
Turn Hybrid sleep off