Video capture stopped working

for some reason the video & screen capture features of MSI Afterburner have stopped working for me. they worked fine a few days ago, and i haven't changed anything as far as i know so i have no idea why it's happened. has anyone else encountered this? i bet it ends up being something really basic

my capture settings can be seen here if it helps at all

 

What games are you running? Are you using modified libraries such as FXAA?

 

Same problem here.

Games: BF3, CSS, no modified libraries.

 

Try to set Audio Source manually.

 

Tried it, but I don't think recording settings have anything to do with it since the OSD does not appear in-game as well.

OP also stated screen capture doesn't work.

 

Well, are you running games in compatibility mode (because you shouldn't). Afterburner can't work if you trick it.