A:
After doing some research, this is a either a Windows issue or an issue with your particular computer. There seem to be a variety of reasons that this happens.
You may be unable to use Bluetooth devices to resume operation from certain power management states (such as "suspend" or "hibernate"). In some low-power states, the wireless receiver may be unable to receive information from the Bluetooth devices.
To resolve this issue , follow these steps:
Open the Keyboard control panel item.
Click the Hardware tab, and then click Properties.
Click the Change Settings button
Note This step requires Administrator access
Click the Power Management tab, and then verify that the Allow this device to wake the computer is enabled.
Click OK, and then click OK again.
Note If your computer does not support Advanced Configuration and Power Interface (ACPI), the earlier steps may not be available. In this case, you have press the power button to wake the computer. If you cannot resume computer operation by using any of these methods, you may have experienced a system problem.