Why is my screen blank?

I had some Chrome OS defective notices pop up all of a sudden. It required me to use the Chrome OS recovery utility to create a USB Recovery drive to re-install the OS. It worked, and things went back to normal...for a little while. Then the Chrome OS defective issue popped up and got fixed several more times, until finally...the screen would stay blank when the Chromebook was powered on. I could still hear the fan running, and see all the usual lights, like power on indicator light, etc.