Hi Nikolai, I'm Benedict, an Independent Advisor. I'm here to help you.
Please try updating manually the audio driver in Device Manager > Sound, video and game controllers > Realtek(R) Audio
- Locate the said driver in Device Manager
- Right click on the driver and select "Update Driver".
- Next select "Browse my computer for drivers"
- Click on "Let me pick from a list of available drivers on my computer".
- Make sure the option "Show compatible hardware" is checked.
- Select High Definition Audio Device and click Next.
- If the audio doesn't still work, repeat the steps above but now select Realtek High Definition Audio driver and click Next.
- If that doesn't still sort the issue, try uninstalling the driver and restart your computer.
If the issue still persists, try checking the sound settings if disabled that typically located in BIOS > Advanced settings > Onboard or Device Configuration > Audio controller.
If that doesn't still help, try searching for latest audio driver or Realtek/audio controller driver and BIOS update from your PC's manufacturer support website. Download them, if any. Install the said driver first and if the issue still persists, try updating the BIOS by following the guide on how to install BIOS update from the said support website. If BIOS has been successfully updated and the issue still occurs, try installing the said driver again and see if that would now sort the issue.
Please see if that helps.
Regards,
Benedict P.