Replacement of Wi-Fi Module
Faulty WiFi on your laptop can be due to a faulty module. this is a small circuit board chip inside your laptop. Some are easily accessible but not always. Replacement will usually fix this problem. Of course you can also use a USB WiFi adapter that plugs in the USB slot but then you lose a valuable USB port into the bargain. Sometimes upgrading a working WiFi module can have a big impact on your WiFi experience. This task should NEVER be attempted by anyone who does not know how to do it as damage to the main circuit board can result.