Windows 7: TOSHIBA M500 PORTEGE sound problem

Hi,



I just installed Windows 7 on my TOSHIBA M500 PORTEGE laptop and by default it had an Integrated HD audio driver installed but I couldn't get any sound from the speakers or headphones.

Now I've downloaded and installed the Vista Soundmax driver from toshiba-asia.com but still no luck. As far as the system is concerned the driver is working perfectly and when i try to update the driver it says the latest version is already installed.

I've tried several different drivers such as realtek, sound blaster, sigmatel etc. but so far only Soundmax driver was successfully installed.