Hi, I'm John! I will help you with this.
On many Windows laptops, the keyboard backlight is controlled using a Function (Fn) key.
Please try this:
Look at your keyboard and find a key with a keyboard/light icon (often on F3, F4, F5, F7, or F9).
Hold Fn and press that key.
Example: Fn + F5 or Fn + F9
Or press Fn + Esc first (this turns on the Function keys on some laptops). Then try pressing Fn + the key with the keyboard/light icon
Press it a few times to cycle through brightness levels.
I really hope this information is helpful! Let me know if you have any further questions or concerns.
Regards,
John J.D.