Cannot type text in either model or paper space

Win 7 / 64b, 4GB, 3.2GHz, Quadro 600. Autocad 2008. (Yes, I know it's not supposed to run here )

Anyway, I can't seem to be able to type anything in text or mtext windows. I either have my keyboard input ignored completely, or I get blank spaces, depending on what font I choose. Disabling the Aero themes don't help. All runs fine in a XP virtual machine, but more slowly. Any other thoughts?

Did you try running a repair? Sounds like the Internal text editor is not functioning. Does it work if you set Notepad as the text editor?

How long ago did this start?

Is the layer on and thawed?

Set UCS to World and Plan to World, try it then.

Give more details or attach a drawing that exhibits this behavior.

Notepad is currently the default text editor. No layers frozen or locked. UCS and Plan are both world. Can't remember when it started, I believe it was early last week. I will try running a repair as soon as I get a chance. Some fonts display as blank spaces, whereas other font choices don't advance the cursor like I wasn't typing anything.