I have two routers, the first one is not wireless and the second is wireless (Model No. TL-WR740N).
To the first one is connected the TV and the second router. To the the second router (the wireless one) is connected a PC (windows xp) through a UTP cable and 2 laptops (windows 7) via wi-fi. Internet works for all the computers and all of them are pingable. The problem is in file sharing. The first laptop can't access files from PC but it can access files from the second laptop. The second laptop can access files from PC but it can't from the first laptop (the icon of the first laptop is shown in "Network" but it gives an error when trying to access it). The first laptop can access the files from PC only if it's connected to the wireless router through UTP cable, otherwise it won't work.
Please help. I know that the problem is in the first laptop but i don't know where exactly. (i need to access wirelessly the PC files using the first laptop)