I turned on my Alienware 17 R2 a few days ago and the cursor had disappeared. While troubleshooting, I was in the Control Panel and checked for the cursor location to be noted when I  pressed Control. So, now when I press Ctl, I get a bunch of circles where I last tapped on the screen, but there's no visible cursor. The touch screen works, the keyboard works, but no visible cursor. Does anyone have an idea about how to get my beloved cursor back?