Hi Rick,
I had this problem too. Seems to be an 'IE 10" issue. Here is the answer as provided by Kenneth18278
""If you're using IE10 as your browser, look at the address bar (top left) and click the little button to the right of the down arrow (tool tip says "compatibility" and a bit more). The button will turn blue, and the <Enter> key should work. I had this problem when I first got IE10.
Regards,
Ken""
Hope this helps, Andrew.