Update = After verifying ownership and completing troubleshooting, a DELL agent setup service.
The keyboard backlight is always on on my PC, since I start it. The command to switch on/off the keyboard does not work even if the key to control it, F5 key, works. The backlight is still on even when the PC is in sleep mode. Sometimes I switch on the PC and it all works correctly but mostly not.
Keaboard backlight always on