Also check control center > sound devices and make sure its outputting to the correct device. After updates windows tend to change sound settings. If that doesnt work contact hp and ask for driver help
Try a DIY repair center, its likely that they will help you along the way. Repair shops normally charge a commission on any part they use + an hourly rate so they may be hesitent in using your parts. Esspecially as thier reputaion is risked if they use parts which they have not approved, which is likely to be the case with a battery from an unknown seller. There is a repair cafe in perth which might help https://repaircafeperth.org.au/.
