[tubalkain]

I seem to recall these routers having a security routine that'll automatically block all connections from all computers unless you've added their MAC address to the router's approved list. I'm not sure how to get to the approval or filtering options in the router setup pages (router rules?), but once you're in there, look for approved MAC addresses and/or filtered MAC addresses, and if there's one in the filtered list, move it to the approved list. If that's the problem, that'll clear it up.