So for some reason my sister's laptop cannot connect to our home Wifi. Obviously Im using the right passcode and Ive tried using the button on my back of the router but it either says I have a limited connection, then it drops, or doesnt connect at all. Ive only connected it with an ethernet cable. Really can't figure this out and google is really overwhelming and I havent found a solution yet. Its only my home wifi too. Wifi at her school and other places works fine. I've updated all the drivers still not working.