I purchased an Intel RC2 laptop through eBay a couple of years ago. When I use the touchpad, it will begin skipping an acting erratically opening and closing various windows. Sometimes it will freeze. It has gotten to the point where I will only use the touchpad when I have to. Otherwise I primarily use an optical mouse plugged into the usb port. Is there anyone who knows how to fix it or where I can find a replacement touchpad? The motherboard is an Intel MGM45WU.