According to your description, I suggest you refer to the following information:
First, I suggest that you can refer to the following methods to solve the touchpad problem you mentioned:
1. Unplug the external equipment of the machine to eliminate the influence of the external equipment;
2. Click on the mouse and other pointing devices in the device manager, and then try to install the official touchpad driver according to the system of your machine to see if it can solve the problems you encounter; For how to download the driver of the corresponding product of your machine from HP official website, I suggest you refer to the following official documents:
/chatAsk an online engineer to help you solve the problem further.
More product information is available in www.hp.com.cn/800..