Why does my computer screen jump?

My screen started jumping around uncontrollably. i a not touching the mouse or mousepad, and it still does it. I rebooted to no avail. Someone told me it might be a hardware problem. any suggestions??? thanks
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  1. Spencer L said:
    My screen started jumping around uncontrollably. i a not touching the mouse or mousepad, and it still does it. I rebooted to no avail. Someone told me it might be a hardware problem. any suggestions??? thanks

    Power down - remove graphics card, wipe of dust dirt, reseat.
    Check video connections as secure. If pc, try monitor on another computer.
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