Laptop touchpad problems when PSU charger (Original) is plugged in

I have an HP laptop which battery is damaged since February of 2021. HP DIAGNOSTIC TOOLS tells me that battery internal capacity is only at 10% of its factory capacity. The battery is also inflated. I am still using the battery because windows keeps me notified when I accidentally unplug the charger. Since two months ago, I have been suffering with my touchpad. Every time I plug in my charger, my touchpad moves erratically to every single direction. I thougth at the beginning that my touchpad was dirty outside and inside, so in cleaned up my whole PC. That did not solve the problem. I started

Question by CharlesXavier on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.