i have a 16gb wifi jailbroken ipad and it won't sync to my computer. the computer doesn't even recognize that anything is plugged in. its not the computer or the usb cable because my iphone works fine. i tried to charge my ipad with the usb cable plugged in to the power adapter that came with the ipad but it doesn't charge either. every once in a while, when plugged in to power adapter it will say "not charging." i would take it to the apple store but i can't since its jailbroken. i tried to reset (sleep/wake and home until apple logo shows, then releasing sleep/wake button). that didn't help. the usb and itunes logo appeared but my computer still wouldn't recognize that anything is plugged in. can anyone help? Thanks.