Windows 7 - Logitech G9 mouse works intermitenttly with Win 7 Ultimate x64 bit

I am sorry for misleading you guys, what I meant was... Straight through the Computer USB Port.

Well, none of the changes have done anything to fix the issue, I was on the Vista OS (wife had used the pc), restarted to my Win 7 and I manually had to start the mouse from the Logitech Device Settings.

Only thing I can think is that, somehow, the std microsoft driver that is also installed is somehow affecting my logitech driver... something like some times the logitech driver loads first and some other times the microsoft is able to load prior to the logitech.

Don't know if this trick could work with Windows 7 but can you try booting in Safe Mode, go in the device manager and manually remove any unwanted mouse drivers?

The problem there is that immediately after rebooting back to Win 7, it will scan for hardware changes and will load the Microsoft driver again... its like some other hardware that I use needs a mouse driver because I see no other reason why win 7 will load it if the Logitech is already there

Have a look on page 2 of this thread, near the end, Stormy pointed out a way to stop automatic drivers installation. You could give it a try if only as a workaround or even just to see if the problem is there, it may not be but I think it worth the try.

Dang, it just dawned on me what happened here. I had done that but now I remember what happened.

Yeah, I should try again, my problem was that I tried that and I ended up w/o my KB functionality because Logitech G15 software does not really bring a driver so I did a System Restore, hence, I put back the Microsoft drivers for both the Kb and the Mice.

After a while, you forget all the changes you have made