I believe this keyboard has LED lights? If so, do you have a plain keyboard that you can use to see if you get the same issue? If you do not, then i suspect your keyboard has a short or trying to get too much power from the USB.
Electronic devices can go bad over time. If you are able to test the port with a different keyboard then you can determine if the keyboard is bad, or the motherboard (usb ports).yes, my keyboard has led lights, however I've been using this keyboard for a long time and I'm only getting this power surge now. What do you think the solution would be for this?