Win 7, MSI 7200, Firefox 39....recently I have noticed increasingly that when I try to control my touchpad cursor to hove over a link or anything in a precise way, it is kind of jumpy. In fact, if I simply try to put my finger on the touch pad and hold the cursor still over some object, it moves on its own 1/8 to 1/4 inch. I ran Malwarebytes and it turned up nothing. I checked Device Manager and tried to update the Sentelic finger sensing pad driver and it said it was up to date....no yellow triangle on anything in Device Manager. Any help appreciated.