There are several issues that cause it to stop working, recognizing them timely and acting to fix is the key to overcome such annoying problems.
'''Restore Windows to the last working configuration:'''
If your Wi-Fi has just stopped after installing any new software, then it would be better if you could try restoring your Microsoft Windows back to an earlier copy. If any recent installation is stopping your Wi-Fi from work, then you should better roll back Windows to an earlier system restore point that will surely work for you.
'''Reinstall the wireless drivers:'''
Sometimes, corrupt drivers are the real culprits. If your laptop is a victim to these issues, it won’t detect any internet network. Such indicators reflect issues pertaining to the corrupt drivers. Therefore, it’s better to reinstall the drivers in an attempt to fix the network problems.