Hi Joel, my name is Neil, I'm an independent adviser and a Windows 10 user like you.
I'm sorry you're having some words 'auto-corrected' and auto-capitalised in Windows.
To stop Windows from doing this, please follow the instructions below:
On your keyboard, press the Windows Key + i to open Settings.
Click on Devices.
Click on "Typing" on the left hand side menu.
Here you can see what Windows is doing when you type. You will want to turn OFF "Autocorrect misspelt words".
Also lower down under Hardware Keyboard, turn OFF "Autocorrect misspelt words I type".
That will stop Windows from interfering with your typing. However, each app may have it's own Spell Checking and Auto correction running. So you will need to look into the menu of whatever app you're using and deselect any auto correct and auto capitalisation that may be selected.
I hope this helps.
Kindest regards,
Neil