If you aren't sure which brand you have, right-click the device in Device Manager > Properties > Details > Hardware IDs. Search the "VEN" (Vendor) code online.

Ensure your Wi-Fi/Bluetooth toggle (Fn + F3) is turned ON.

A costs less than $10. Simply plug it into any USB port, and Windows will automatically install the driver within 30 seconds. This bypasses the internal hardware entirely and often provides better range and battery life for peripherals.