Hello KathKMB,
Thanks for reaching out to Microsoft Community. I understand how important this set up for you.
Just to confirm, have you already tried doing the steps below to properly change the language keyboard entirely?
- Next to the date and time in the taskbar, you need to click on the abbreviation of the current language (ENG).
- Then, left click on your preferred language that you installed to set it as the new keyboard language.
Please confirm by simply respond on this thread. I'll wait for your response.
Regards,
StevenK