I have a Gateway T-1616 laptop. it cam with Vista 32bit. I ran the upgrade advisor on it, and it said all would be well running Windows 7 64 bit. I did a clean install. It works great except for one thing. Whenever it goes to sleep, upon wake-up, it says I have no sound installed, but it has sound, also my USB mouse does not work, although clicking it woke it up in the first place. If I restart it, everything is fine again. If I never let it sleep, all is well too. I have not hooked any other USB device up to see if it would also not work, to know if it is a problem with the mouse, or USB root hub. I have all available drivers for everything, and Windows says they are the best drivers for it when I check in Device Properties. Not sure wht the deal is. It never did it on Vista.