New device not have audio. I have to reinstall Conexant ISST Audio and restart. It doesn't last.

[Starky123]

When I bought my laptop I've never had automatic sound. I took it to Costco and some IT guy said he fixed it. But after I leave me computer without using it for months it reverts back to 

no sound device installed. I have to go to Device manager and under sound, video and game controllers I click Conexant ISST Audio Properties. It tells me to restart my computer and then I have sound.

Audio lasts for only a few days or hours.  I have to do the Conexant ISST Audio Properties routine and restart my computer before I get sound again. 

Is there something I need to install in my computer to get automatic sound? Thanks!

[banhien]

@Starky123 

Before we can help, we need to know what EXACTLY is your HP Envyx360 ? Please use the following instructions to find out the model/product of your machine:

https://support.hp.com/us-en/document/c03754824

  or

https://support.hp.com/us-en/document/c00033108

Please do NOT post its Serial number (s/n).

Regards.

[Starky123]

The model number: 15-aq173cl

[edit]

[Starky123]

I just posted the serial number!!

Model: 15-aq173cl

[banhien]

@Starky123 

The specs of your machine is

    https://support.hp.com/au-en/document/c05530687

Please do a clean install Audio software/driver, this should help.

  (a) Download the following driver and save on your computer,

               https://ftp.hp.com/pub/softpaq/sp95001-95500/sp95182.exe

  (b) Go to Device Manager, Sound to uninstall sound driver and reboot,
  (c) Right click downloaded file and select Run as administrator,
  (d) Reboot again.

Regards.