Windchill (in Creo browser) not loading

I am a high school student and my robotics team is using Creo to build our CAD-version robot. I've had two laptops from Catepillar and each one has worked for a bit, then will, for no reason, stop working. I can log on to the server, but then I can't pull up my workspace or the team's cabinets. The browser on load to the point in the picture, then not load any further.

Image may be NSFW.
Clik here to view.

Note: I did try to downgrade to IE 10, but that hasn't fixed the problem.