I had to do a factory restore on my Gateway laptop. It is just a couple of months old. Anyway, I just put it back on factory settings. The mouse worked then. It worked for a long time this evening after I was updating windows, and then I installed the anti virus program. Then I noticed the mouse did not work. I unplugged it and replugged it into the usb slot. (sometimes the red optical light comes on, most of the time not) When I tried to plug it in the third time it saw the mouse, but for some reason it thought it needed a driver. As windows was looking for a driver, it said my mouse was unplugged. I don't know what to think. When I look up the mouse in Device Manager, all I see is the touchpad. I tried to find a driver on Toshiba website,because that is the brand of the mouse. I did not find one. I tried to Add A Device, but it did not find the mouse. Any ideas?