Unstable language and keyboard settings

After a repair install I have found my language/ keyboard settings unstable, It seems that on time pressing such as the ampersand key (@) will produce @, other times ".

Here are the various settings in Region and Languages

Region abd Language Format set to UK English; Location to UK; Location tab to UK (default).

Keyboard is set to UK in box and set as first in list below it.

On the Admin tab Input and Format set to UK; Welcome Screen input to US Format to UK; New User Accounts as Welcome Screen

This is frustrating. Can someone advise what is wrong, and ,more immmportanty the cure? Please!

Under the keyboard language options, is there another language installed?
If yes - check if you maybe press Alt + Shift at times (which is the default hotkey for changing the input language).
How to solve? Unless you use that second language, try setting your used language (the one you want) to standard and delete the other one.

as above, First thing I alway's do after fresh install. Set 1 language/keyboard and delete others.
If you use only 1 language.

You'll find language setting in configuration panel. (search for change keyboards or other input methods). Press Change keyboards.

Make sure you have only 1 language and 1 keyboard setup. Than you cannot change it accidentally by pressing the alt shift change language hotkey.
(and when you're at it, also make your language bar invisible (Tab language bar).)

You know,: I had never thought of deleting the US English version.:doh