If you’re experiencing issues with the internal microphone on your HP ProBook 450 G9, there’s a potential fix that might help you restore its functionality without needing to send your laptop to a repair center. Here’s a step-by-step process based on a successful troubleshooting experience.
First, you should check your Windows sound and privacy settings. Make sure the microphone is enabled and that apps have permission to access it. Head to your Sound Settings and Privacy Settings to verify these options.
Next, open Device Manager to see all your audio devices. Look for entries under “Audio inputs and outputs” and check drivers related to your sound hardware, such as Realtek Audio and Intel Smart Sound Technology (SST).
It’s helpful to compare driver behavior with a working device if possible. Trying to remove and then reinstall your audio drivers—ensuring you install the correct versions in the proper order—can sometimes fix driver-related issues. Remember to restart your laptop multiple times while troubleshooting.
If these steps don’t resolve the problem, a more advanced solution involves rolling back or recovering your BIOS. This process requires a stable internet connection via an Ethernet cable (not Wi-Fi), your device plugged into power, and patience during the procedure.
Here’s how to perform the BIOS rollback:
1. Turn off your laptop completely.
2. Power it back on and immediately press F10 repeatedly to enter the BIOS setup.
3. Select “Update System BIOS” from the menu.
4. Choose “Check HP.com for BIOS Updates.”
5. Look for the option to rollback or recover the BIOS. Select to revert to BIOS version 01.17.00.
6. Confirm your choice. When prompted for a code, enter the numbers displayed on the screen using the main number keys, not an external keyboard.
7. Do not interrupt or turn off your laptop during the process. Let it complete automatically.
8. The laptop will restart itself, possibly more than once, to apply updates. Just wait until Windows boots up normally.
Once the BIOS restore is finished and your system is back to Windows, check your microphone. It should now be working properly. Test it by recording sound or checking the Windows Sound Settings.
In my experience, standard troubleshooting like driver updates or privacy adjustments may not fix the issue. Often, performing a BIOS rollback or recovery is the key to restoring internal microphone functions.
Hopefully, this solution helps other HP ProBook 450 G9 users facing similar microphone problems.