If you need stable Bluetooth for headphones or a mouse, buy a $10 USB Bluetooth dongle (e.g., TP-Link UB500). It will work perfectly and save you hours of frustration with the internal adapter.

Lenovo G510 Bluetooth Not Working «360p HD»

If you need stable Bluetooth for headphones or a mouse, buy a $10 USB Bluetooth dongle (e.g., TP-Link UB500). It will work perfectly and save you hours of frustration with the internal adapter.