Without any actual system info we can't really tel lyou much. the usual applies: Check youir graphics driver and update it, make sure your network connections and local access to fiels and folders isn't being blocked so the program can load all the panels and its configuration.
Hi, unfortunately we need more information to help you. What version of Adobe Illustrator are you using? What are the characteristics of your computer? Have you checked if there are any drivers available for your video card? Have you tried to reset the software preferences?