I recently switched platforms from mac to a PC i bought from a friend. I have a problem connecting to the wireless internet. I can connect to ethernet through a cable into the modem, and that works; I can connect to the wireless network that the modem broadcasts, but the network by itself won't give me internet. The computer claims that it is a no-internet network, which is ridiculous; I'm posting from it on my mac right now. My drivers are up to date, I've disconnected and reconnected the modem and restarted the computer several times in several different orders. What can I do to fix this?