Vista - CoDWAW No Sound, Needsie needs your help

yes, im a pro but this one has me stumped, call of duty 5 suddenly doesnt want to have sound, ive trolled forums trying to find the answer.
Methods ive used:
1.Changing my sampling rate from 24bit 48000mhz down to 44100mhz.
2.Right clicking show disconnected devices and enabling stereo mix.
3.Completely uninstalling and reinstalling the game, which i learned that steam doesnt like me, after i deleted, i spent 3 hours downloading the thing again, backup game folders before uninstalling a steam game.
4.Reinstalling my audio drivers, thanks realtek for having dial up servers
5.Reverting back to default settings in-game.

I think it maybe something to do with 4oD as I tried to install it and some errors came up, so I promptly uninstalled it and this happened.
(4oD is British channel 4 on demand application)
welcome to try any solutions guys, fire away.
<<<<<system specs are there<<<<<

I'm sure you also tried running it in Compatibility Mode

and also running as admin. Just to see...

Do you have the 1.2 patch installed cause I have read that some users are having problems with that patch that your having problems with.

its a steam game mate, steam havent released the patch and i assumed that if i uninstall it, steam would automatically update it, but ive got in contact with steam and they only deal with billing and accounts, nothing to do with them if its a game issue.
since its a steam game, the executable is this "C:\Program Files (x86)\Steam\Steam.exe" -applaunch 10090, so I cannot run steam in compatability mode as it comes up with the attachment warning below. I have also system restored since my last post as well before I installed 4oD, so I dont think it's that.

I have the exact same problem mate. Steam started updating it the other day, but I found it strange how there was no new "update news" and no patches had been applied. The only thing that changed is that the sound stopped working .
Well, I seem to have brought sound back by changing sampling rate to 16 bit 44100Hz, but its not an ideal fix.

I hope steam release the patch soon (I heard it contains DLC map pack which I want)
All in all I wish I hadn't got it from steam. I ended up buying it for 42 quid cas i wasnt thinking about the exchange rate and steam was only in dollars at the time. But thats life

damn thats a rip off, during the christmas period, the prices halved, i got mine for £23.99, i think its £30 right now.

The patch will solve that hopefully, unfortunately, I had to do that to mine as well.

I had a hard time getting WAW to run at all on Vista 32 SP1-finally with the 1.2 patch for the game it worked...except sound. I then reinstalled the DX November update and sound card driver (Realtek HD). Now all is well. I think the DX install from the game took out my sound card??

il have a look into it, thanks bobw2118

THANK YOU!!!!!!!!!!!! It worked for me. Thanks alot, your the man!!!