To better assist you - May I have the exact model name of the product? Refer to this document for steps to find the product details. Do not share any of your personal information such as serial, phone number, email ID, etc.
While you respond to that, try these steps to disable the touchpad -
Double-tapping the upper-left hand corner of the TouchPad enables or disables the TouchPad. When disabled, some models display a graphic on the screen showing the TouchPad with a red line through it.
An amber light illuminates briefly if the computer supports this feature. There might also be an audible sound.
Also, here's another method -
1) Click Start , and then type mouse in the search field.
2) Click Change your mouse settings.
3) Click Additional mouse options.