Please capitalize where necessary: in the case that your f4a file doesn't open, it is highly likely that you do not have the correct software application installed on your pc to view or edit f4a file extensions.
A: In the case that your F4A file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit F4A file extensions.

Please capitalize where necessary: motivation would be the driving force of all activities at the school.
A: Motivation would be the driving force of all activities at the school.

Please capitalize where necessary: the austrian site has had a racing team named interwetten.com racing that from the beginning competed in the formula vw series and just the second year the team won the championship both for the driver as well as the team championship title.
A: The Austrian site has had a racing team named Interwetten.com Racing that from the beginning competed in the Formula VW series and just the second year the team won the championship both for the driver as well as the team championship title.

Please capitalize where necessary: they charged into the cave with warscreams and totally annihilated the whole squad of armoured men.
A:
They charged into the cave with warscreams and totally annihilated the whole squad of armoured men.