I use the accent mark key to make accented letters when I'm typing, and I use ALT+N to get the 'Ñ' key. But often mid typing something changes and I can't make the accented letters anymore, I now have to press CTRL + Accent key + letter to get it. I can't make 'Ñ' either anymore using ALT+N. Now when I press ALT it open the ribbon shortcut while it didn't do that before. If I close Word for a few hours it will work again as before.
Does anyone know what is happening? I've had this problem for months