I installed realtek drivers, but still no sound

[lovelycabelinga]

i installed windows 7 and after that everything works fine except that there is no sound. the device manager says that the HD audio is working fine. the driver is the updated version.

I don't know what to do. both the internal speakers and the headphones are not working. but the symbol for audio says it is working just fine.

what could be the problem? HELP! thanks!

 

[lovelycabelinga]

in addition, the driver for HD audio device is from microsoft. i don't know why it uses the driver from microsoft. can it not use my own driver?