Windows 10 Brightness adjustment Fn keys have stopped working on a HP Pavilion dm1-4125sa

  • Thread starter Thread starter Myron.S
  • Start date Start date
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Myron.S

This question has been asked and standard troubleshooting has not worked. I have used System Restore to successfully rewind the computer to the 8th October where the the brightness adjustment keys (on the F2 and F3 keys) did work, then allowing Windows 10 re-install updates that were removed.


OS Version: 10.0.19041 N/A Build 19041
OS Manufacturer: Microsoft Corporation
OS Configuration: Standalone Workstation

System Manufacturer: Hewlett-Packard
System Model: HP Pavilion dm1 Notebook PC
System Type: x64-based PC
Processor(s): 1 Processor(s) Installed.
[01]: AMD64 Family 20 Model 2 Stepping 0 AuthenticAMD ~1320 Mhz
BIOS Version: Hewlett-Packard F.17, 29/10/2012


What I did do was update the BIOS from F.11 to F.17 as the Bluetooth hardware kept on mysteriously vanishing on power-up as if it did not exist in the computer, which the BIOS update appears to have fixed, but now I have the brightness control keys on the keyboard stop working on a known configuration of Windows 10, where it once did work.

Does anyone have any ideas?

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