Check the Antenna

Before spending any time diagnosing an issue, double and triple check the antenna connection. If it is a screw-on type, ensure it is fully tightened. For mini-PCI cards, ensure the pigtail connectors are properly connected and snapped in place. Pigtails on mini-PCI cards are fragile and easy to break. After disconnecting and reconnecting pigtails a few times, they may need to be replaced.