If you are having issues with sites not loading correctly it is always suggested to clear your Internet cache or web cache. A web cache stores copies of documents passing through it; subsequent requests may be satisfied from the cache if certain conditions are met. The steps to clear your cache will vary dependent of your Internet browser. See below for the 3 main browsers used today.
For Firefox: http://goo.gl/Hki7J
For Chrome: http://goo.gl/TMIoy
For Internet Explorer: http://goo.gl/OEuyB
