I have a PI 3 A+ and can’t access browsers. The launch page is OK but I can’t load a website. I have tried Chromium, Firefox and Midori. The cursor also moves on its own.
What operating system did you install?
I have aRaspberry Pi OS, 32bit. Had the same problem with the 64 bit OS.
How are you connecting to the Internet? Home network? Does it time out error out?
I use a BT Home Hub and sometimes the building’s Wi-fi network.
What eventually happens? 404 not found error, etc?