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I had downgraded my SL400 to Windows XP SP3.


After updating my system drivers using Lenovo's 'System Update' the audio driver was installed. However there was a question and exclamation mark next to the device's icon and I saw an error message: Audio device on high definition audio bus'. the device instance ID was


How can I rectify this issue?


When using Windows XP for audio, try to load the driver manually in C:\DRIVERS\WIN\AUDIOC\WDM.


WIth regard to the video issue in HDMI audio you will need to install the video driver again at C:\DRIVERS\WIN764\VIDEO\HDMI. It is because the audio and video have the same HDMI system files needed.

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