Blank screen? What to do?

Problems come, not only with Pathways. Because of a software update or a virus, my iPad had problems, and when tried to répare from afar, for a whole week, it did not open any more. I went to Apple center, where they downloaded a Brenda new system, I love and it works, but still have to learn to use, as it has many new features.

Next day, my laptop froze, and at restart, gave again just a black screen you see above. Thanks to the guy who made the image above and wrote what to do, and Google search, I succeeded, next morning to make my laptop work again. Then decided to give myself a day free of learning or work, and reading kindle book reward. So this is written later in the day. 

I feel that an image may attract a lot!