Welcome to HP Support Forums. :) I came across your post and would like to help.
I understand that you have an HP Notebook - 14-bs011tx. I read that the sound quality has dipped after a recent update on the laptop. I appreciate the steps you have performed and have certainly done a good job.
To assist you better, I would like to know the following information:
- Do you know what update it was? Was it an update fro Microsoft?
- Do you have external speakers or headphones to check with?
While you respond to that, I recommend you to perform the following steps to isolate the issue and arrive at a fix:
- Disconnect the power cable from the printer while the printer is still ON.
- Disconnect any other cables if connected the printer.
- Press and hold the printer’s power button for 15 seconds.
- The printer should be directly connected to the wall outlet and not to a surge protector.
- Reconnect the power cable to print and the printer should power ON by itself. If the printer doesn’t power ON then please manually power it ON.
Let's use the troubleshooting tool in Windows to fix sound
In Windows, type find and fix audio into Search, or right-click the speaker icon on the taskbar and select Troubleshoot sound problems.
Select Find and fix audio playback problems or Find and fix audio recording problems from the Search results.
Select the device you want to troubleshoot and click Next.
Wait while the troubleshooter detects problems and makes changes (or prompts you to make changes).
Figure : Detecting problems
- When the troubleshooter is done, the Troubleshooting has completed page is displayed, listing any problems found and what changes were made to the computer.
- NOTE: For detailed information about the troubleshooting, click View detailed information in the troubleshooter window.
- Click Close.
Figure : Troubleshooting completed
- If a recommended action is displayed, select Apply this fix, or Skip this step to continue to search for other problems.
- If the audio problem has not been resolved, continue to the next step.
Let us uninstall the audio drivers and then reinstall them. The following steps will help:
- Open the device manager.
- Expand "Sound, video and game controllers".
- Right click on the sound drivers in it and select uninstall.
- Close the device manager.
- Please download and install the audio drivers from this link.
- The laptop needs to be restarted after the drivers are installed successfully.
Now, you may play an audio and check the results. If the issue persists then please update the BIOS on your laptop via this HP link. The charger must be connected during the BIOS update.
I sincerely hope this fixes the issue. Let me know the outcome. Cheers! :)