Delas52,
I had my mouse also quit working on me after doing a reinstall, I have a Logitech MX518 & after I was installing some updates & the INF driver my mouse just quit. It would light up on Post but once it got into windows it would not light up again. What I did to get it working again was I went into device manager & noticed that all my UB root hubs had yellow exclamation marks by them. I just removed the hubs & rebooted & let windows redetect them & everything started to work again. I think it is possibly a bug with the inf drivers.