always cannot connect or connected before ?
wifi ID & password , can connect but not internet , or just wifi ID already cannot connect ?
try remove the save wifi ID and try again , also try to nearly router , sometime the Laptop wifi signal not strong.
if you can have usb wifi Adapter , can try it with your laptop , sometime the laptop build-in wifi adapter problem ?
can try use LAN cable to connect , if just no internet problem , see can access internet ?