Hello Davendes :smileyhappy:
Welcome to the HP Forums!
I understand that the computer's audio driver has stopped working. I can do my best to assist you!
An uninstall and reinstall software is the easiest and most effective solution, thankfully :smileytongue:
If you would like assistance with this, please provide the following information:
1. The computer's model number. If you require assistance locating this information, please reference this website: Guide to finding your product number
2. The computer's operating system. If you require assistance locating this information, please reference this website to determine your Windows operating system.
3. Have you installed any new hardware on this computer, before the issue appeared?
4. Have you installed any new software or drivers on this computer, before the issue appeared?
Thanks for bringing this issue to the HP Forums. Have a great day! 
Mario