First of all try to disable the onboard sound card. Enter the bios by pressing "del" or F2 during the boot process, navigate to find sound options and disable the onboard audio. Boot the pc normally, go to the device manager and uninstall any audio drivers. Shut down the pc, unplug the power cord and plug-in your new pci audio card. Start the pc and install the drivers for your new audio card.
In case of a problem or clarification, don't hesitate to post.
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Answers & Comments
First of all try to disable the onboard sound card.
Enter the bios by pressing "del" or F2 during the boot process, navigate to find sound options and disable the onboard audio. Boot the pc normally, go to the device manager and uninstall any audio drivers. Shut down the pc, unplug the power cord and plug-in your new pci audio card. Start the pc and install the drivers for your new audio card.
In case of a problem or clarification, don't hesitate to post.
Thanks and regards
Please kindly rate this solution
Stelios