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NO NO NO..... You can't mix drivers from other manufacturers. Drivers are written to make the chips for the audio to connect to the computer correctly. Go to Lenovo's web site to get the updates for your sound card.
If your sound WAS working, you should not need an audio driver upgrade.
Your default playback device may have been changed by another program or usb device. (right click on the speaker icon in the system tray)
IF you do need drivers just go to your computers makers support page and download them.
If you can find them, leave the make and model and i will find them for you.
You probably need the M/soft UAA drivers first download and install them Then go to device drivers right click driver with yellow mark on it and upgrade driver should go on net and find and install driver
http://drivers.softpedia.com/get/SOUND-CARD/OTHER-SOUNDCARDS/Microsoft-UAA-Bus-Driver-for-High-Definition-Audio.shtml Go to the above site and download the UAA drivers and install them then go to device drivers and Upgrade sound driver it will go on net to find and install them Without the UAA drivers your sound driver will not be recognised
I had to do this to my compaq and it found the drivers through upgrade Please post fixya for me