I have a dell Inspiron 6400 which is now 4 years old. I am trying to connect it to my D link DSL 2640R but am unable to do so wirelessly! I am able to connect through the ethernet cable but am unable to do so wirelessly!!! Somebody please help!!
You're sure you have a wifi card?
my Dells:Optiplex 3020 - Windows 7 Pro 64-bitPrecision M6300 - Windows 10 Pro 64-bitPrecision M6300 - Linux Mint 17.3 Rosa / Ubuntu 12.04.5 dual-bootLatitude D620 - XP Pro SP3