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Fix a Chromebook that has display that has wrong refresh rate

We'll set the correct refresh rate in Settings, rule out external display and cable, or tell you when to call support.

Troubleshooting · Home maintenance
5–15 min
What you'll need
  • Chromebook
  • External monitor and cable (if using one)
Step 1 of 7

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Steps

Goal: Confirm the refresh rate symptom, set the correct refresh rate, then rule out external display, cable, or hardware issues.

  • Check whether the display flickers, stutters, or feels sluggish when scrolling or moving the cursor.
  • Good: You have confirmed the symptom. Proceed to Built-in display or External display.
  • Bad: Unclear—open Settings > Device > Displays and check the current refresh rate.

Built-in display

Goal: Set the built-in screen to the highest supported refresh rate.

  • Click the status area (clock), then the gear icon. Settings > Device > Displays.
  • Find Refresh rate or Display frequency. Select the highest value (often 60 Hz or 120 Hz). Lower values (e.g. 30 Hz) cause flicker or stutter.
  • If the highest rate causes issues, try one step lower. Some panels are unstable at max.
  • Good: The display is smooth. Done.
  • Bad: No refresh rate option—restart; if still missing, Powerwash or call support. If flickers at all settings—call support.

External display

Goal: Set the external monitor to the highest supported refresh rate.

  • Settings > Device > Displays. Select the external display (not the built-in).
  • Set refresh rate to the highest value. Check the monitor OSD for refresh rate or gaming mode—some monitors need OSD changes.
  • If the external display still flickers, try a different HDMI or USB-C cable. Old or cheap cables may not support high refresh rates.
  • Good: External display is smooth. Done.
  • Bad: Cable and monitor checked, still flickers—call support.

Restart and Powerwash

Goal: Reset display state if settings do not stick.

  • Restart the Chromebook. Recheck Settings > Device > Displays. If refresh rate was stuck, restart may fix it.
  • If refresh rate keeps reverting after restart, Powerwash may help. Settings > Advanced > Reset settings > Powerwash. Back up your data first. After Powerwash, set refresh rate again.
  • Good: Settings persist. Done.
  • Bad: Settings still revert—call support.

When to get help

Call support if:

  • The refresh rate option is missing and does not appear after restart or Powerwash.
  • The display flickers at all refresh rate settings.
  • Settings do not stick after Powerwash.

Verification

  • Refresh rate is set to the highest supported in Settings > Device > Displays.
  • The display is smooth when scrolling or moving the cursor—no flicker or stutter.
  • For external displays, the monitor shows the correct refresh rate.
  • Settings persist after restart.

Escalation ladder

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

  1. Refresh rate Set refresh rate to highest supported (60 Hz or 120 Hz).
  2. Resolution and refresh Check resolution/refresh combination; lower resolution if needed.
  3. External monitor and cable Check monitor OSD; try different cable.
  4. Powerwash Powerwash if settings do not stick.
  5. Call support Option missing or display flickers at all settings.

What to capture if you need help

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

  • Chromebook model
  • Built-in or external display
  • Refresh rate currently set
  • Steps already tried

Is the problem on the built-in display or an external monitor?

Built-in and external displays use different settings.

Check Settings > Device > Displays. If you use an external monitor, select it. Built-in: set refresh rate in Settings. External: check Chromebook and monitor settings.

Built-in External

You can change your answer later.

Is there a refresh rate option?

Some Chromebooks show refresh rate in display settings.

Settings > Device > Displays. Look for Refresh rate or Display frequency. Option exists: set to highest (60 Hz or 120 Hz). No option: restart; if still missing, Powerwash or call support—display may not expose the setting.

Yes No

You can change your answer later.

Set refresh rate to highest

Select the highest refresh rate (60 Hz or 120 Hz). If the display flickers at the highest, try one step lower. If smooth, done. If still flickers at all settings, call support.

Done

Restart and recheck

Restart the Chromebook. Settings > Device > Displays. Check if refresh rate option appears. If yes, set to highest. If no, Powerwash or call support.

Done

Is the external monitor at highest refresh rate?

External monitors have their own max refresh rate.

Settings > Device > Displays. Select the external display. Set refresh rate to highest. Check the monitor OSD for refresh rate or gaming mode. Smooth: done. Still flickers: try different cable; check cable supports the rate.

Yes No

You can change your answer later.

Try different cable

A bad or old HDMI or USB-C cable can limit refresh rate. Try a cable that supports HDMI 2.0 or USB-C with DisplayPort. If still wrong, call support.

Done

Refresh rate correct

Display is smooth. No further action needed.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a Chromebook display have wrong refresh rate?
Low refresh rate causes flicker or stutter. An update or Powerwash can reset settings. External monitors may have different max refresh rates. Set to the highest supported in Settings.
Can I fix wrong refresh rate myself?
Yes. Settings > Device > Displays. Find refresh rate or display frequency. Set to 60 Hz or higher (120 Hz if supported). For external displays, check the monitor and cable.
When should I call support for wrong refresh rate?
If the refresh rate option is missing, the display flickers at all settings, or settings do not stick after Powerwash. The display or cable may be faulty.

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