For about a week or so now I've been having issues with my 1520. At random times the screen will start shaking as if it's trying to scroll two directions and it will sometimes randomly click things on the screen. It pulls up Cortana alot and the capacitive buttons will stop responding all together. It only stops when I press the power button to turn off the screen but it just randomly starts later. I've tried a soft reset and that did nothing. Anyone have this issue before and have any idea what is causing this?