mouse has mind of its own

[Wigette]

I am adding to the complaint list about this CLEARLY KNOWN issue about erratic mouse activity on this laptop. I have had my laptop over a year now and in the last month the mouse - both touchpad and external mouse - have developed a mind of their own. The cursor will randomly move, things will pop open because computer thinks the mouse is hovering over it, and at its worst, windows and random programs are popping open and closed. I did updates, including BIOS, and have disabled the touchpad, touchscreen, and hp pen, but it is still doing this. I am VERY disappointed in this as I use this for work and spent good money on this and need something reliable. I see people complaining about this for 7-8 years at least, based on forums. This should have been fixed by hp or should not be sold knowing about this issue. I would love recommendations on how can fix this if there is anything else I can do at home. I am not particularly computer tech versed, but can figure it out if steps are laid out simply and clearly.