No Audio Device / Can not Connect to RPC Server

[Suchin]

I tried to troubleshoot using all available ways, yet there is no solution.

First, Tried troubleshooting Audio using Find and Fix problems with Audio. Speakers are missing in Device List.

then, I tried to open sound, video and game controllers from Device Manager, I didn't find a speaker driver even there.

Next, I tried to open Bang & Olufsen Audio Control and it says Cannot connect to RPC Server.

Later I tried to test Audio using HP PC Hardware Diagnostics and by selecting Component Tests>Audio>Audio Playback Test. Result is Device not Found.

If you can observe in every screenshot that I've shared the speaker icon is disabled. If I hover over the speaker it says No speakers are plugged in.

I'm talking with support team since last 45days and even more, a support agent visited my home and told me that he will replace the part, its been a month and no one showed up and no response from support. What should I do?

[KrazyToad]

@Suchin

Welcome to HP Community

I have gone through your Post and would like to help

Please run a Test from F2 Diagnostic and let me know the outcome

- Hold the power button for at least five seconds to turn off the Notebook.
- Turn on the computer and immediately press Esc repeatedly, about once every second. 
- When the menu appears, press the F2 key.
- On the main menu, click Component Tests and Audio

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.