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I own a Microsoft Optical 5-button mouse (wired) and it seems to cut in and out of power every now and then, but when I play WoW it seems to just shut off for no reason and I have to restart to get it to work again, I've had the mouse for about a year and it just started giving me trouble today and I've already tested other mice in the USB ports and they worked fine. Should I buy a new mouse?