error messages and ammunition pickup

I Want to record a movie but i’m having some troubles, sometimes, a blue or yellow message appears at the right-top of the screen, when recording the movie with fraps, the message appears, that bother me a lot, and when I pass over an enemy weapon, happens to appear other message, I tried using Cinema Helper, but, these 2 messages keep appearing, there’s a way of Hide everything? or at least, make the npc don’t drop the weapons so I can’t take the weapon.