I'm trying to convert lower case text to uppercase text in microsoft word
When you've had caps lock on by mistake, highlight the words you typed and press shift+f3. Pressing shiftf3 switches between the upper case title case and the lower case
eg. if you type.
tHIS IS A TEST.
... then select all the text and press Shift+F3.
This IS A TEST.
... then press Shift+F3 again.
THIS IS A TEST.
... and Shift+F3 again.
this is a test.
... and Shift+F3 one last time.
This is a test.
It's interesting that the behavior is a little different if there's no full stop period character in the selected text Shiftf3 capitalizes every word when switching from case to case
This Is A Test
I hope it helps