Remove all BHOs. I won't duplicate prior discussions so here's the items for you to google.
Use the first to understand what they are. Use the second to remove all of them. Since I've written this a few dozen times in the forum, from now on I only give the short answer.
Please tell me what I can do to correct this problem. Everytime I close out my windows screen the Internet Explorer box pops up with the message that "Internet Explorer has encountered a problem and needs to close". I have to close this box then my screen turns off. What can I do to stop this?