Check your documentation (online as well) and check with Toshiba and their forums. Many touch pad machines have hot key systems for keyboard and touchpad and you usually can toggle many of these on and off. Or even disable them altogether. One place to look is Control Panel - Mouse - for touchpad settings however there may be
hotkeys that are in effect that are not shown there.
You could try going to the touch pad settings in Control Panel and changing the touchpad sensitivity to a "heavier touch". It worked for a friend of mine but it will solve your problem.