I have 2 Acer Aspire 3500 notebooks running XP Home. I decided to add a mouse to the machines. The first machine the mouse installed without a problem (as expected). On the 2nd machine, the mouse is recognised as a USB device, but then appears in Device Manager as an unknown device. Tried uninstalling and re-installing. Tried dis-connecting and reconnecting without success. I tried a different mouse – still no luck. The other mouse worked fine on the other machine. I know the USB ports are OK. I have used flash drives and a numeric keypad without a problem.
Usually the properties of the “unknown device” says the driver is not installed, or during the process it may say that there is a problem with a line in the INF file. Which INF file would that be? Is that really the problem?
Any suggestions?
