It could be an add-on that is messing things up. Have you tried it with Internet Explorer (No Add-ons), which you will find on your Start Menu under All Programs -> Accessories -> System Tools. If this works, then you can troubleshoot your normal IE connections by selecting Tools menu -> Manage Add-ons -> Enable or disable Add-ons.
Here is a Previously Answered Question of how to find the problem when IE No Add-ons stops it from happening:
BoLaFish 10:38 pm on December 24, 2009
It could be an add-on that is messing things up. Have you tried it with Internet Explorer (No Add-ons), which you will find on your Start Menu under All Programs -> Accessories -> System Tools. If this works, then you can troubleshoot your normal IE connections by selecting Tools menu -> Manage Add-ons -> Enable or disable Add-ons.
Here is a Previously Answered Question of how to find the problem when IE No Add-ons stops it from happening:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Q_24296000.html?cid=236#a24076381