I tried rendering my video and when I clicked it a white pop-up that says after effects on it shows up. I can't click anything around it in after effects but there is a hidden button on the bottom right rhat just makes it Pop/up again. Please help I use a pc and I can't do anything
Nobody can tell you anything without proper system info or other technical details. We don't even know your version of AE.
What's your full version number of AE? A lot of people with CS6 are running version 11.0.0.x and they're four bug-fix updates behind. Make sure you're running 11.0.4!
If you already are, we're going to need a lot more information: FAQ: What information should I provide?