If you're having issues with your Chromebook device first make sure it is fully updated and reboot:
https://sbcoe.freshdesk.com/a/solutions/articles/22000294708?portalId=22000044851
If you're still having issues after you've confirmed the device is fully updated and has been rebooted then you can run the built-in hardware diagnostic to ensure the battery, memory and CPU are working properly:
https://sbcoe.freshdesk.com/a/solutions/articles/22000294708?portalId=22000044851