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3 years agoWhich model of laptop is it?
It’s been a while since I’ve worked on a laptop, but they usually had a ribbon cable connecting the trackpad. I would open it back up and check for any loose or broken connections.
You could check ifixit for your model, they usually have teardown guides and may have more specific info.
Wow, that is a complicated teardown! That’s even worse than some phones.
I found this guide, https://www.ifixit.com/Guide/HP+Omen+15-ax243dx+Keyboard+Replacement/100786 which shows the whole process. It looks like the ribbon cable for the track pad comes around front, though.
I think it’s the middle one on the left in this picture: https://guide-images.cdn.ifixit.com/igi/wTXxlgFcJW6nFZJJ.large
I would open it back up and check that cable before going any farther.