Apart from the random screen scrolling issue, I love my notebook. It boots up in a few seconds and the body is light and slim. The symptoms started showing about 6 to 8 months after I bought it. At first it only happened when I'm browsing my email. It would suddenly start scrolling to the bottom of the page, and even when I drag the vertical scrollbar up, it will again scroll to the bottom of the page. When I'm reading or composing an email, it would randomly jump to the bottom end of the email.
This used to occur every other day and once or twice a day at most. Then, it began to happen almost daily. It also started scrolling on Word documents and Notepad, then eventually to everything. When it's acting up and I click on a dropdown menu, it will continuously scroll to the bottom of list and then back to the top. I resort to a couple of methods to temporarily the stop random scrolling. Hitting esc key stops it briefly and enables me to temporarily continue what I'm doing. Then it would scroll again. To keep it at bay longer, I would reboot. When I click on the Shut down menu, it would continuously cycle through the menu list. I need to use the mouse or up and down arrow to select Restart.
Note that a simple restart doesn't solve the problem. I have to restart in Safe Mode, then restart in normal mode to resume my work. This is so frustrating. I called HP Support while my notebook was still under warranty. I was told to reset my machine, which I did but that didn't work. Any suggestions would be greatly appreciated. Thanks.