Open up Internet Explorer, click on Tools, click on Internet Options, then select the Advanced tab.
About four menu items down in the Browsing settings list is an entry that you can tick which says 'Disable script debugging'. CLick to tick it, click on Apply then OK.
Close and then re-open IE.
Some debuggers embed themselves into your Windows shell in a very aggressive manner, so the above is not always 100% successful, but it should sor things out.
If it has no effect, reply to that effect and one of us will help further.