Hi, Welcome to JustAnswer. This is Mahbub Shahin can assist you.
Please let me know when you will be ready?
It seems some how your keyboard settings were disable.
To fix it please click on start menu--> Control Panel-->In view mode “View by Category”, find the section “Clock, Language and Region”-->click on keyboards and language-->Click “Change Keyboards or other input methods”-->“Change Keyboards”-->“Add” Scroll down to “English (United States)” and expand-->Check box “US”-->Press OK-->Press OK. — You’ll see two keyboards listed “US” and “United States (Apple)” Press OK.
Now restart your computer. try to edit your document. Hope it will work.
If you stuck or any more question please let me know.
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That looks like it fixed the problem thanks for the help.
I have know idea how my key board would have been changed.