I have a retail upgrade to my Vista home premium to Window 7 home premium and it goes all the way to 62% finishing and then strops the installation and reloads me back to my OS. I have tries several times. I even made a copy in case the dvd was bad. still same results. The compatability wizard says I am ok, but suggests that I uninstall the "Dell modem diagnostic tool" and then re-install it after the update. I cannot find it and even went into device mgr and disabled the modem as I am on dsl and don't use. Anybody got a clue to help? Thanks very much.