I just bought my ipad. Windows 7. loaded itunes 9.1. signed onto me. com. connected ipad, error message USB DEVICE NOT RECOGNIZED. Tried multiple solutions. USB Root devices, Hub uninstalled. ipad connected. same error. tried power down both ipad and pc. called geek squad and hp help. no success. tried msconfig disable for all startup programs, except itunes and apple mobile. did not work. reinstalled itunes 9.1 too. what should I try next??