Bill has Time Warner Cable for his broadband and he uses wireless to his laptop. He's having connection issues because it's slow, though. Leo recommends first running SpeedTest.net to measure how slow it actually is. He should try connecting directly to the modem via Ethernet to see if it's still slow. If it is, it's a computer issue. If not, then the issue is with the Wi-Fi router.
It sounds like a configuration issue, though. Leo also advises creating a dummy account with administrator approvals and see how it works.