Do you see EXT in the statusbar at the bottom right?

If you do, try hitting F8 to toggle it off.

If that isn't it, maybe your mouse has a stuck button. Gently bang the buttons
(including the wheelmouse button if you have one) to see if that fixes the
problem.

LSOT wrote:

My cursor is constantly highlighting cells as I move it over the screen in
Excel , I cannot select anything or use the menu bar.

I think there is a keyboard shortcut to fix it but I'm not sure what it is!
Any help much appreciated.

Thx

--

Dave Peterson