HDMI sound to TV - very ,very weird issue

[cnmapr]

Hello everyone,

I have to mention that I'm using BS player since my first internet connection ever. I don't and I won't switch to any other player, since BS does the job great.

I've been experiencing a very odd issue in the late time.

I'm using a HDMI cable in a TV, connected to my GRAPHICS CARD from my PC

Windows 7 32 bit, ATI Radeon HD 4650

I was watching an mp4 video and suddenly,the sound vanished.

- reinstalling BS player : failed
- trying other video formats to play : failed
- changing the default codecs/ outputs in OPTIONS menu : failed
- reinstalling Windows : succeeded, but happened again in a few weeks.

The weird thing: everything else works.

- playing sounds in browsers
- using other players to watch movies through HDMI
- playing BS player movies using my PC speakers

This specific scenario IS the problem :
- playing any video in BS player through HDMI output- no sound,just video

Please ,if you have any ideas...I've tried everything :(