I have Windows 7. I do not know if this works the same for other versions of Windows.
- Go to Device Manager
- Double-click on Bluetooth Radios
- Double-click on the Bluetooth Adapter
- Click on Power Management
- UNCHECK “Allow the computer to turn off this device to save power.”
- Click OK and then X out of Device Manager
- Reboot your computer. You may have to totally shut down and then start back up.