How to Restore Chrome OS
For Chromebook owners, the vast majority of your files are kept in the cloud. If your laptop hardware fails, you can rest assured that everything is ready to be re-downloaded. But if your copy of Chrome OS stops working, then you've got a whole different problem. Luckily, you can backup your Chrome OS, so if your notebook encounters an issue, you can restore it and get back to work.
Here's how to restore Chrome OS:
Making a Recovery Image
1. Install Chromebook Media Recovery on your notebook.
2. Open the utility and click Get Started.
3. Enter your model number and click Continue.
4. Insert a flash drive or SD card. It must be at least 4GB, and any existing content that's on it will be erased.
5. Click Create Now.
6. Wait until it's done and click Continue to complete the process.
Restoring Chrome OS
1. Hold Escape + Refresh on the keyboard, then press the power button.
2. Connect the recovery drive when prompted.
3. Wait while the notebook restores Chrome OS.
4. Remove the recovery media when prompted to restart the Chromebook.