The laptop's wifi was working fine a week or two ago. Then it would start disconnecting after 10 or so minutes. The networks are still detected, but I am unable to connect to my network. After "Diagnos[ing] the problem," the computer tells me that my security network key is incorrect. Even after entering the correct key, it still does not work. Please note that at the same time, wireless internet works for the pc in my room as well as any other electronic devices. Could there be a problem with the hardware? Thanks.