It is probably a problem with your internet explorer.
Try some of these steps and then test after each one. Most likely you have a problem with add-on's, and if you start internet explorer without add ons and then test, you will probably find that it works fine.
So try starting internet explorer without add ons.
If that doesn't work try some of the following steps outlined in this next article
Tips for solving problems when Internet Explorer crashes or stops working
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