How to Turn on Keyboard Light Windows 10 is best handled with the current supported controls and a quick verification before changing related settings.
Steps
- Look for a keyboard-backlight symbol on the laptop’s function-key row or keyboard controls.
- Press the indicated key, using Fn if required by the system’s function-key mode, to cycle brightness.
- If no light appears, check the PC manufacturer’s utility or BIOS/UEFI for illumination settings.
- Look up the exact model specifications to confirm the installed keyboard is actually backlit.
- Update only the appropriate manufacturer hotkey/firmware components if the feature previously worked.
How it works
Keyboard lighting is a hardware feature and the shortcut varies by manufacturer/model. Windows 10 does not provide one universal keyboard-backlight switch.
Important considerations
Do not assume every configuration of a laptop model includes a backlit keyboard. Windows 10 is beyond ordinary support, so use the manufacturer’s current guidance and a supported OS where possible.
Additional guidance
Common shortcuts include function keys with a backlight icon, but Acer, Dell, HP, Lenovo, ASUS, and others use different combinations. Some keyboards offer only on/off, others several brightness levels, and some models include timeout controls in firmware or manufacturer utilities.
Practical notes
If the backlight turns off after a few seconds, that may be a timeout rather than a fault. Some firmware lets you configure separate AC and battery timeouts. A missing keyboard-light symbol plus model specifications listing a non-backlit keyboard usually means software cannot add the feature.

Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.