Compaq Presario Series Maintenance And Service Manual page 169

Also see:
1.800.AT.COMPAQ
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1 Change the hardware settings of your audio card or other peripheral card in your
system if the peripheral card is using any settings used by the factory-installed
devices.
2 If you are unsure of the settings of the peripheral cards, you can isolate the
source of the problem by temporarily removing all cards not manufactured by
Compaq, or resetting the default settings and running Compaq Utilities. After
that, add the cards back one at a time until the card that is causing the conflict is
found.
System