I'd log on to the router and have it use a different channel to see if that makes any difference. If not, you can replace the router for as little as $15.
My computer says it is connected to the wifi network at home, but the internet does not work at all. The computer works on any other wifi i've tried and the connection at home works on my android phone and my friends computer. I've searched all over the place for a solution but nothing seems to work. When i run the diagnostic tool it just tells me to reset the router, which i have done several time to no avail...i really am at a loss here and would appreciate any help. Thank you.