Search guides

Fix a Chromebook that has a display that has wrong brightness

We'll adjust brightness with keys and Settings, turn on automatic brightness, or tell you when to call support.

Troubleshooting · Home maintenance
5–10 min
What you'll need
  • Chromebook
Step 1 of 7

Quick triage — pick your path

Get started

Choose the option that matches what you see. You can jump straight to that section.

Show full guide

Steps

Goal: Adjust brightness so the display is comfortable to view.

  • Check whether the display is too bright, too dim, or not responding to controls.
  • Good: You have confirmed the symptom. Proceed to Adjust brightness.
  • Bad: Unclear—press brightness keys and check Settings > Device > Displays.

Adjust brightness

Goal: Set brightness to a comfortable level.

  • Press the brightness-up or brightness-down key. Or Settings > Device > Displays > Brightness. Adjust the slider.
  • Good: Brightness at a comfortable level. Proceed to Turn on auto-brightness if you want it to adjust to ambient light.
  • Bad: Brightness will not respond—restart and try again, or call support.

Turn on auto-brightness

Goal: Let the screen adjust automatically to ambient light.

  • Settings > Device > Displays. Turn on automatic brightness. The automatic brightness feature adjusts based on ambient light.
  • Good: Auto on. The screen should dim in dark rooms and brighten in bright light.
  • Bad: If brightness is still wrong, check power-saving mode. If brightness will not respond, call support.

When to get help

Contact support if:

  • Brightness will not respond to the keys or Settings.
  • The screen stays at maximum or minimum brightness after a restart.
  • You have tried automatic brightness and the display is still wrong.

Verification

  • The display is at a comfortable brightness level.
  • Brightness responds to the keyboard and Settings.
  • Automatic brightness adjusts the screen when lighting changes (if enabled).

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Brightness keys Press brightness-up or brightness-down.
  2. Settings Adjust brightness in Settings > Device > Displays.
  3. Auto-brightness Turn on automatic brightness.
  4. Restart Restart and recheck brightness.
  5. Call support Brightness stuck or will not respond.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Chromebook model
  • Whether brightness responds to controls
  • Steps already tried

Does brightness respond to the keys or Settings?

Brightness may be stuck or not responding.

Press brightness-up or brightness-down. Or Settings > Device > Displays > adjust brightness. Responds: set to comfortable level. Does not respond: restart.

Yes No

You can change your answer later.

Is brightness at a comfortable level?

Set brightness for your environment.

Adjust brightness with keys or Settings. Comfortable: turn on automatic brightness if you want it to adjust. Still wrong: check power-saving mode or ambient light.

Yes No

You can change your answer later.

Set brightness

Set brightness to a comfortable level. Turn on automatic brightness if you want it to adjust to ambient light. You are done.

Done

Turn on automatic brightness?

Auto adjusts to ambient light.

Settings > Device > Displays. Turn on automatic brightness. The screen will dim in dark rooms and brighten in bright light. If brightness still wrong, check power-saving mode. If brightness will not respond, call support.

Yes No / still wrong

You can change your answer later.

Brightness correct

Brightness is at a comfortable level. No further action needed.

Done

Restart and recheck

Restart the Chromebook. Set brightness after restart. If brightness still will not respond, call support—software bug or hardware fault may need repair.

Done

Call support

If brightness will not respond to the keys or Settings, or the screen stays at max or min after restart, call Chromebook support. A software update or hardware repair may be needed.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a Chromebook display have wrong brightness?
Brightness set too high or too low. Automatic brightness may be off. A software bug or power-saving mode can limit brightness. An update can reset settings.
Can I fix wrong brightness myself?
Yes. Press brightness keys or use Settings > Device > Displays. Turn on automatic brightness. Restart if brightness will not respond.
When should I call support for wrong brightness?
If brightness will not respond to the keys or Settings, the screen stays at max or min after restart, or the display is stuck—a software bug or hardware fault may need repair.

Rate this guide

Was this helpful?

Continue to