From the Device Manager, you can check the status of your WLAN drivers to make sure the device is working properly. If the Device Manager shows a yellow circle and an exclamation point next to your wireless adapter, then your wireless adapter may not be properly installed.

Right-click the adapter in question, select Properties, and then look at the Device Status box from the General tab to see that the adapter is working properly. If necessary, select the Driver tab in the Properties dialog box to access controls that let you uninstall or update the
driver.

If you see a red X by your wireless adapter, then the device is either disabled or your system can’t recognize it. Right-click the adapter and select Enable. If this doesn’t eliminate the red X then you may need to replace your wireless adapter.