Hello,
Thank you for using Microsoft products and posting to the community.
Based on your descriptions, since you have mentioned that "Even in BIOS no internal signalling/pointing device is available", it is likely an issue in the laptop's hardware or firmware.
I recommend you to contact HP support for a repair or replacement if the laptop is still under warranty, or your local repair shop for a hardware checkup if not.
Thanks for your patience and understanding.
Best Regards,
Johann - MSFT | Microsoft Community Support Specialist