Microsoft Surface brightness Key Not working Fix

I am using Windows 10. My laptop brightness button is not working. I searched on Google for an online solution and got a solution for this from the device manager > display adapter setting and update it but this did not work for my system. I tried it twice. What do I do to fix it?

How to Fix Issue Microsoft Surface brightness Key Not working?

Solution:
If the surface button is not working, try the following steps

↣ Reinstall your Graphic card driver.
↣ Update laptop firmware and drivers.
↣ Reset surface device.
↣ Run Device & Hardware troubleshoot

1. Reinstall your Graphic card driver

↣ Uninstall display drivers from surface device. Type Device Manager in search box. Click the option > Display adapter > right click on Intel graphic UHD 620 > Uninstall
↣ Restart surface device, it will automatically reinstall.

2. Update laptop firmware and drivers

↣ Please make sure that all surface devices, firmware and software are updated to latest version. Restart computer changes.

3. Reset surface device.

↣ To reset Surface go to Start> Settings> Update and Security> Recovery

↣ then, click on Reset this PC> Get started and now follow the steps.

4. Run Device & Hardware troubleshoot

↣ For Device & Hardware troubleshooting, use command prompt and type below the line and press enter.
msdt.exe -id DeviceDiagnostic

How to Fix the Error of inoperable Brightness Key of Microsoft Surface/ Error on Microsoft Surface unworkable Brightness Key