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restart the compuer or replug the cable or replug the USB cable
yes, after 4 hours past since you unplugged it, you can replug it! 4 hours would be good because of how a refrigerator system works..
unplug it an replug it in or just get a new mouse
Unplug everything, replug it back in.
just unplug the lamp, then replace it, or whatever then replug it to the power. then you should test it.