I have a Toshiba Satellite L55W-C running on Windows 10 64-bit operating system. I've had the computer for about 6 months and it's been great. Within the last 2 weeks the cursor is starting to move erratically. It snaps to the periphery of the screen and clicks on its own. I have run a complete virus scan with McAfee and Malwarebytes; changed mouse settings (doesn't seem to matter whether I'm using an exterior mouse or the touchpad); uninstalled Synaptics driver and reinstalled; uninstalled Google Chrome and reinstalled; nothing seems to work. Any thoughts?