When that screen comes up, does it give you an option to browse your computer? If so, then browse over to C:\Windows\System\drivers and click on mouhid.sys there. Also, try this. Unplug the mouse, restart, and then try installing it. Also, make sure you go to Add/Remove Programs to make sure you remove all the rest of the drivers it installed. I just read something about that: Ignore the touch thing, that's just the name of another device but the same principle should apply. EDIT: I just read your edit. You have to unzip it. I wasn't able to attach a *.sys file so I zipped it. I should have been more clear in my first post, sorry about that.