Try this Marty,,,
The white box on the very far right above, when you put the cursor on it, it will say: switch editor mode.... try clicking on that and see if it does not correct the problem.
I have spell check on all 3 of the machines I use. So I have that ability. That sounds like your computer is not set correct.
I will be able to check this out more thoroughly when I get back into town. Got a young man here demanding my attention. :)