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DaxxonFoster's avatar
DaxxonFoster
Iron Contributor
Apr 14, 2026

Windows 11 screen brightness won’t adjust, stuck at max

I try to adjust the screen brightness on my Windows 11 laptop, but the slider doesn’t work. It stays at the brightest and hurts my eyes. How to fix the brightness control?

1 Reply

  • Zevhu's avatar
    Zevhu
    Brass Contributor

    Restart your computer fully. Don't just use Sleep or Hibernate — a full restart forces Windows to reload display drivers and power policies from scratch.