i upgraded my OS from windows vista business to windows 7 ultimate ,and after the upgrade every thing was working fine
after a while when my computer resumes from sleep or hibernate all of my USB ports stops working!!!
and also when this happens I try to restart or shutdown my computer it just goes for ever and i am forced to a manual shutdown with the power button
i am using a lenovo T61 Laptop ,and my OS is fully updated
so i guess that i need some help here ... please.