Answer:
You find me behind the stars; or in a sixth seventh or third. It takes something round a computer and me to make pie. I am bigger than anything you can think of.
I'm found on Windows yet I am just a decoration. What am I?
I am used for light yet I am solid. Without me you would feel enclosed. I hate being touched especially with a lot of force. I like to be in buildings.
I have two bodies joined together as one. When standing still I run and run.
Sing me to a baby about to go to sleep.
The answer I give is yes, but what I mean is no. What was the question?