Fix bluetooth keyboard CONNECTED but NOT WORKING in Windows

Solution 1 – Check if the Bluetooth Support Service is running

• Open your Start Menu and type “Services”, then open the Services window.
• Now sort the massive list alphabetically and find “Bluetooth Support Service”
• Once you have found it, right click it and open Properties.
• Under the General tab, you will see a drop-down for “Startup Type”, make sure this drop-down is set to “Automatic”.
• Now Stop the service – this can take a minute depending on how fast your computer is.
• Once stopped, Start the service again – this again can take some time.
• Now click OK.

Solution 2 – Check if your Power Management options are not interfering

• Open your Start Menu and type “Device Manager”, then open the Device Manager
• Under the “Bluetooth” category in Device Manager, find your Bluetooth adapter
• Right-click your Bluetooth adapter -> Properties -> Power Management tab
• Uncheck “Allow this computer to turn off this device to save power”
• Now click OK and close the Device Manager, then reboot your PC.

These 02 solutions are actually worked for me!! *original post from windowsreport.com*