Try to open Internet Explorer in No Addons mode and see if it works. If it does, maybe some add-on is interfering. Try to identify it and then disable or remove it.
Run Internet Explorer Performance troubleshooter. The troubleshooter will run and fix all identified issues automatically.
To open the Internet Explorer Performance troubleshooter directly use: %systemroot%\system32\msdt.exe -id IEBrowseWebDiagnostic
Reset Internet Explorer settings using this Microsoft Fix It. You wont need to open IE to use this tool.