Press Windows Key + X , then tap B (or select Mobility Center) to find a brightness slider. macOS Brightness Shortcuts
If your Chromebook has dedicated brightness keys on the top row (typically keys 6 and 7), you can press them directly. brightness keyboard shortcut
Most laptops use Fn + a Function key (usually F1 – F12 ). Look for a "sun" icon on your keys. Dell: Typically Fn + F11 (down) and Fn + F12 (up). HP: Look for dedicated brightness keys or use Fn + F2/F3 . Lenovo: Often Fn + F5/F6 or Fn + Home/End . ASUS: Usually Fn + F5/F6 . Press Windows Key + X , then tap