Bluetooth 4.0 (or later) with Low Energy (LE) support. To find out if Bluetooth LE is supported, on each PC, select the Start button, type device manager and select Device Manager from the list of results, expand Bluetooth, and then select the name of your Bluetooth radio adapter. Right-click it, select Properties, select Details, and then select Bluetooth radio supports Low Energy Central. Why is my Windows 7 PC not detecting my Bluetooth speaker? Enable Discovery Mode. If Bluetooth is enabled on the computer, but you cannot find or connect to other Bluetooth enabled devices such as a phone or keyboard, make sure Bluetooth device discovery is enabled. Select Start > Settings > Devices > Bluetooth & other devices.