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Hmm..

can you give some screen shots?
You can search "snipping tool" and it will allow you to select a part of your screen, and save it as an image. Do that with your environment variable.

Here's a tutorial to make sure you did the correct steps..
Java Tutorial: Java For Beginners (Part 1): Getting Started - YouTube
and you can skip to part 1:30 to installing env. variable part,...

Did you put in your environment variable?