Hello!Thank you for your question. I am Shefin and I look forward to helping you with your issue today.
I would suggest you download and install the latest Touchpad driver in order to get the sensitivity adjustment. Please let me know the exact make and model number of the computer, so that I can help you download the driver.
S H E F I N
Have you tried opening Mouse properties from Control panel and changing the settings after installing the current driver?