I think this belongs here : Computer Builds & Upgrades - MPGH - MultiPlayer Game Hacking & Cheats - Hacks, Cheats, Downloads, Trainers, Games
But meh, are you sure that Wi-Fi is enabled for your computer?
can it find your network?
do you get errors when trying to connect?
did you recently download a new copy of Windows ?
did you face this problem before? is this the first time it happens?