In my android tablet, WIFI signal and status as connected available thru my Intex router. But, actually it is not connected and I am unable to use any of the internet application from my tablet, but router to PC is working well.
On your PC, go to the IP address of the settings for your router. which is probably 192 point 168 point 1.254.Im not sure which tab, but look through each one and see if they have anything to do with how many devices or device types you can connect to the router. also make sure that the SSID and the network key match. and that you have work group as workgroup.. or even better to take your tablet to your service provider and have them configure it for you.