Please move the post if needed.
I have an Acer C720 Chromebook. I cannot perform a successful recovery and during the recovery process it ends with this message "An unexpected error has occurred". I have created a recovery media using Chrome Recovery Utility but I not able to complete a CB recovery. I tried to perform a powerwash and that didn't work either. After I press ESC - Refresh + Power button, I get to the screen where it says "Chrome OS is missing or damaged. Please insert a recovery USB stick". I am not able to get past that message. I chose the Acer C720 series image. Perhaps I am choosing the wrong image. Maybe there is something wrong with the Chromebook. The CB was not dropped and there is no physical damage.