HELP with IDT Audio Codec!

[gotothedark]

Im really having problems with sound.
Sometimes the sound works but after it wont work.

other situation is sound works from the internet on my browser but my files wont when tried on wmp. also vice versa.

I restart my notebook and it works normal but after a few hours especially when i tried to listen on mp3 and then used my browser on viewing videos at the same time it wont work again.

Notebook: HP Compaq Presario CQ40-190TU
OS: Vista Home Basic 32bit
Audio Codec: IDT High-Definition Audio Codec version 1.0.5934.0

Please i need help, im so frustated on always restarting it to bring it back to normal.

 

[gotothedark]

I found out that their is an update of my audio codec on the Windows Update...

its version 6.10.6087.0 C

but im afraid on downloading it since most of the feedback on the net that their are problems with downloading drivers on the Windows Update.

can anyone suggest what should i do?!