To turn on the keyboard light (backlight) on a laptop, the general method involves using a specific key or key combination that varies by brand and model:

• Look for a key with a keyboard backlight icon, often found on one of the function keys (e.g., F5, F7, F8, F9, F11) or sometimes on the spacebar or arrow keys.
• Press the key alone or press it together with the Fn (Function) key, usually located near the bottom-left of the keyboard. For example, on HP laptops, pressing Fn + F5 or Fn + F9 toggles the backlight

• You may need to press the combination multiple times to cycle through brightness levels or to turn the light off.

Specific examples:

• HP laptops: Press Fn + the key with the backlight icon (often F5, F9, or F11)

• Lenovo laptops: Press Fn + Spacebar to toggle the backlight, and sometimes Fn + arrow keys adjust brightness

• Dell laptops: Press F5, F6, F10, or the right arrow key, possibly with Fn, to toggle backlight. You can also enable/disable it in BIOS settings

• Apple MacBooks: Use the dedicated brightness keys on the keyboard, the Touch Bar controls, or adjust via System Settings > Keyboard. You can also set it to adjust automatically in low light

If your laptop does not have a built-in backlit keyboard, external USB backlit keyboards or LED keyboard covers are alternatives

. In summary, to turn on your keyboard light, identify the backlight key (often marked with a light or sun icon), then press it alone or with Fn. Adjust brightness by repeated presses or through system settings if available