I'm not sure what information you may have given it, I suspect that it was just the router encryption key, so provided you remember that it shouldn't be a problem. Have you tried the old but usually reliable, network reboot. Shut down your computer, deprive the router of electricity (unplug or turn it off), same with ISP provided device. Wait a couple minutes, plug in the ISP's device wait till it's set with all appropriate lights (usually green and steady) then your router again wait till it finishes and is steady and then your computer. Again type ncpa.cpl in search box hit enter, select then right click on the wireless adapter make sure that it is enabled (also if this is a laptop, make sure that the radio is turned on usually a combo of FN keys or a dedicated hardware key) choose status and then the details button and see what information is there.