Thanks for the response. It's along the line of what I expected. The screen on that laptop is known to be problematic as you can see from this search:MX-Rick wrote: Sat Oct 10, 2020 10:46 am The screen only works at the beginning when starting the CD or DVD, but when you want to run the installation you can only see something on the big one or the laptop screen is dark and I have to connect an additional monitor to see something.
https://www.google.com/search?q=HP+Pavi ... e&ie=UTF-8
Based on your description of initial life then nothing more on the laptop's screen and the results from the search, it's fair to say that the the screen is, for all intents and purposes, dead. You can continue to use the external monitor or follow one of the videos included in the search results to effect repairs.