Laptop touchpad's are a known issue and I had no-end of problems with mine on my Packard Bell laptop. I was forever deleting anything I had just typed, or refreshing browser pages, or submitting unfinished posts, because I was brushing over the pad.

I moved to a USB mouse but still had the same issues until I disabled the touchpad.

I don't know if this is the same issues as yours, but that may be a first step to try. With the USB mouse connected, see if you can disable the touchpad. With my PB there is a touch switch right next to the pad that I use to turn the pad on or off, but if you don't have that, see if you can disable it in the Control Panel.

Mark