HP ProBook 470 G4
17.30", Intel Core i7-7500U, 8 GB, 256 GB
HP ProBook 470 G4
17.30", Intel Core i7-7500U, 8 GB, 256 GB
To check the hardware, you could download a Linux Live CD and start the notebook with it. If everything works, then it is due to the drivers. Live CD's are available for example: wiki.ubuntuusers.de/Desktop-CD/ or www.debian.org/CD/live/
Have you ever tried to switch the sound on/off via the function key? Sorry if this is already clear!
I bought this notebook for a colleague and set it up. It has been running for a while now with daily use without any problems.