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Before undertaking significant repairs on your device, you must go through basic troubleshooting steps. These steps can often resolve issues without the need for extensive repairs. Please ensure you check the following.

• Powered on and charged. If your Chromebook's built-in display is not displaying any content:
  • Try charging your device. This should wake it up from sleep mode and power it on.
  • Check the charging indicator light on the side. If your computer shows a sign of life, you're dealing with a screen issue.
  • Adjust the display brightness using the physical keys available on most models. Sometimes, this functionality requires combining the function key (Fn) with the brightness key.
  • Press the Ctrl + Maximize (F4 or F5) keys to switch between internal and external displays. This key combination ensures that the internal display is selected for content output.
  • Disconnect any external devices; by doing so, you can eliminate them as potential sources of the issue.
  • Restarting your device can terminate any problematic programs causing the issue.
    • You can perform a power cycle by pressing and holding the power + refresh keys simultaneously.

    If the issue remains, then proceed to the more in-depth tips below.

    Causes

    Faulty Charging Adapter

    If the battery is dead and your device is not receiving power, it will not display any content on the screen. This could indicate a problem with your device's charging adapter. Check the following to ensure your device receives power from the charger.

    • The outlet you're plugging into is outputting power. Fuses can go out, and outlets can suddenly stop providing power. Check that another appliance can pull sufficient power from the outlet or move your charger to an outlet you know works.
    • Check to see if your device's cooling system is spinning. If your Chromebook has an active cooling system, you should be able to hear the fans powering on when you start up the device.
    • Check if your device's Status LED illuminates. For passive cooling systems, the status LED can determine whether the unit receives sufficient power.

    If you cannot hear the device's cooling system and the Status LED does not illuminate, try plugging in your device using a known undamaged charging adapter. If you observe that the screen only turns on when the device is connected to power, there is likely an issue with the battery.

    ChromeOS Detects an External Display

    When using an external display with your Chromebook, the ChromeOS operating system typically keeps trying to communicate with it even after it has been disconnected. This can result in display-related issues or errors.

    1. Connect your Chromebook to an external monitor or TV using the available outputs. This will allow you to test ChromeOS's functionality on the external display and can help us determine whether the issue is with the operating system or with the device's screen.
    2. Switch your display from the main display to the external display. To switch the display from an external display back to the main screen, press the Ctrl + Maximize (F4 or F5) keys.

    If you have verified that ChromeOS is working correctly with the external display but fails to switch back to the main screen, the main display is likely defective or broken. If you find that ChromeOS is the issue, then continue to the next section.

    Operating System Issue

    To address any potential software issues causing your device to have trouble detecting the internal display, you can attempt to restore ChromeOS using a recovery disk. The instructions for creating a ChromeOS recovery disk are below, and an in-depth guide can be found here. An empty USB drive with at least 8 GB of storage is required.

    1. Install the Chromebook Recovery Utility Extension: Open Google Chrome and install the Chromebook Recovery Utility Extension from the Chrome Web Store. Click on the extension and follow the on-screen instructions.
    2. Prepare Chromebook for Recovery: Turn off your Chromebook and ensure it's connected to a power source. Press the Esc + Refresh (F3) keys simultaneously, then press the Power button. Release the Power button when the Chromebook starts, but continue holding Esc + Refresh until you see a screen prompting you to insert the recovery disk.
    3. Recover ChromeOS: Insert the previously created recovery disk into your Chromebook and follow the on-screen instructions to initiate the ChromeOS recovery process. This will reinstall the operating system and can resolve software-related problems that may be causing the black screen issue.
    4. Follow System Setup: After completing ChromeOS recovery, follow the on-screen instructions to set up your Chromebook as you would during the initial setup. Check if the black screen issue is resolved.

    If the issue persists after restoring ChromeOS, proceed to the more in-depth troubleshooting steps below.