How to enable or disable Microsoft Windows Firewall.
Restore Windows to a Previous Copy
If you are using Microsoft Windows and Wi-Fi has worked in
the past, try restoring Windows to an earlier copy. In some cases, the wrong
settings or software may have caused problems with your Wi-Fi adapter or
problems with Windows accessing the Internet connection.
How to
restore Windows to a previous copy.
Reinstall the drivers and wireless device
Corrupt drivers or wireless driver issues is another reason
why you may not be able to see any Wi-Fi not working
networks or have trouble detecting your wireless card. Make sure you don't have
any driver issues by following the steps below.
Remove
the device and let Windows detect the Wi-Fi card again
Open
Windows Device Manager.
In Device Manager, expand the Network adapters section to
view all network devices.
Highlight your Wi-Fi or wireless network adapter and press
the Delete key to remove the device. If there is a check box to uninstall the
drivers, leave it unchecked for now.
Once the device is removed, close all windows, restart the
computer, and let Windows detect and reinstall the network card.
If letting Windows detect and reinstall the wireless card
doesn't solve your problem, it may be the drivers themselves. Follow the steps
below to reinstall the network card and wireless drivers.
Reinstall
the latest network drivers
Find and download the network drivers for your network
adapter. If possible, we recommend obtaining the drivers directly from the
manufacturer (for example, Dell, HP, Linksys, or Netgear).
