Realtek HD Audio driver disappears after installing an ATI Radeon graphics card

My Realtek HD Audio driver disappears (the Vista "Sound Manager" and "Device Manager") and is replaced with an ATI HD Audio driver after you install an ATI Radeon 5450 graphics card.  I tried to uninstall the ATI Audio driver and re - install the Realtek Audio driver.  But, after reboot, Vista automatically re - installs the ATI Audio driver (and the Realtek Audio driver, which I have just reinstalled, is not where after the reboot).  I use a HP a6110n desktop running Windows Vista.

This works!  I would never have suspected that the problem was a BIOS setting.  Thanks for the good advice!

Tags: HP HP Desktops

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