We JUST got a new Acer computer, came with speakers, and the speakers are making a constant fast clicking sound. Moving the speakers around makes the volume of the clicking go up & down, but the clicking remains. Turning off the speakers stops the clicking. I tried unplugging the USB & the jack from the computer, and plugging it back in, but that didn't help. Why is it making a clicking sound and how to stop? This is brand new!