@mse738 Your touchpad most likely has a scroll function.
The solutions are limited to either disabling the function, disabling the touchpad, or resting the base of your thumb elsewhere to check if it works,
- Control Panel/Mouse/Device Settings tab,
- click on the touchpad listing,
- then on the Settings button.
- Controls can be found here.
- If no controls exist, you may need to download and install touchpad (chipset) and BIOS updates: Click here to find and install the same.
Let me know how that pans out,
If you feel I was helpful, simply click on Accept as Solution to help the community grow,
That said, I will have someone follow-up on this to ensure you've been helped,
Just in case you don't get back to us within 24 - 48hrs, and have a good day, ahead.
Riddle_Decipher
I am an HP Employee