Shortly after you complete the instructions, your computer automatically restarts to complete recovery. On your Chromebook, select “Recover using internet connection” and follow the on-screen instructions.
Chromebook tablet: Press and hold the Volume Up, Volume Down, and Power buttons for at least 10 seconds, then release them. When a message shows on the screen, let go of the other keys. Note: On some Chromebook models: Press and hold Esc + Maximize, then press Power button. 
Chromebook: Press and hold Esc + Refresh, then press Power button. Step 1: If you have anything connected to this Chromebook (such as a mouse or external hard drive), remove it. If neither of those steps fix the error, continue to recovery. If your Chromebook still has an error, reset to factory settings. Turn your Chromebook off, then back on again. If you can sign in to your Chromebook, try these steps first: You’ve tried other troubleshooting steps and nothing has fixed your issue.īefore you recover, try less invasive steps. You get the error message "Chrome OS is missing or damaged.". Before you recover, try less invasive steps. Do not follow the onscreen instructions to turn OS verification on, or you risk wiping your machine’s data and turning Developer Mode off.Recover Chromebook operating system Your device will now transition to Developer Mode.Įvery boot thereafter will also begin with that warning screen, and a need to press Ctrl-D to continue. You will need to press Ctrl-D to continue. When you boot up your Chromebook, it will begin with a warning screen noting that “OS verification is OFF”. 
You will be prompted with an opportunity to “turn OS verification OFF”. On most Chromebooks, you do so by turning the device off, then holding down the ESC and Refresh keys while you press the Power button. To get to Developer Mode, we need to first reboot into Recovery Mode. The use of Developer Mode may void your Chromebook’s warranty. This could include important data like any files you’ve downloaded, or locally cached passwords.
Since ChromeOS is an online-centric operating system, the vast majority of your data will be stored remotely, but make sure you’ve backed up everything important that’s local to your machine before you begin. Placing your device into Developer Mode will wipe all data and user information from it.
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