Replay's no gun sound

Hello, when i watched replay and put the 1st person don't hear the gun sound, all others like granades, switching guns, reloads hear normaly...

Run games couple of times without effects.

Reinstaling, redownloading etc dosen't help.
Reinstaling sound drivers...

I asked many people, friends, clan mates, they hear gun sound normaly.

I decided instal CF on my laptop (Only for internet, films, music) and too no sound idk why.

Maybe someone expirience tihis issue ?


Sorry 4 Eng.