If your motherboard is old, you might've fused the USB sockets. I've done this once before on a really old motherboard by repeatedly unplugging then replugging a PS/2 port mouse.
I'm not sure it ever applied to USB, but if it did, then that'll probably be your problem.
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![[Image: AndrewsStyle.png]](http://web2live.org/36/AndrewsStyle.png)
