|Two possibilities. |
Disable all addons and see if that works. If so then enable them one by one to find the culprit and take it from there.
Second possibility is to Reset IE:
Tools > Internet Options (or Control Panel > Internet Options) > Advanced > Reset button. This will lose your addons and customizations but the addons will come back as you collect them when browsing and installing IE updates.
Always pop back and let us know the outcome - thanks