sound buttons not functioning

[ioander]

The sound buttons on the keyboard do not function. I cannot volume up or down any sound using the keyboard buttons or the sound bar . I can only change the volume through the sound device I use to reproduse sound (eg windows media player or vlc) or through the youtube sound bar. 

[Rainbow23]

Hi @ioander,

Welcome to HP Support Community. 
Thank you for posting your query, I will be glad to help you.

I see that you are facing keyboard issues with your HP Notebook.

Please follow the steps listed below to test the keyboard.
1. In Windows, search for an open HP PC Hardware Diagnostics for Windows, and then select Run as administrator.
NOTE: If the HP PC Hardware Diagnostics for Windows app is not available on your computer, download the latest version from this link

2. The app opens to the main menu. Click Component Tests.
3. The Component Tests menu displays. Your Component Tests menu might be different, depending on the components installed on your computer.
4. To run the test, click Input Devices, click Keyboard, and then click Run once. The Keyboard Test time is 3 minutes.
You may also check this document

I hope this helps.
Take care and have a good day.

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