Go to Control Panel, Add Remove Programs and un-install all listings related to your audio card. Do not restart your computer when prompted so.
Go to Control Panel, and switch to Classic View. Click System, Hardware tab, Device Manager button and delete all sound cards entries in Sound, Video and Game Controllers as well as any previous sound card entries from the Device Manager.
Reboot the computer and cancel out of any driver installation if you are prompted. Insert the Creative Sound Blaster installation CD into your CD-ROM drive. Exit from the installation wizard if it autoruns.
Click Start, Run and then Browse. Browse to Z:\Audio\Drivers\CTZAPXX.EXE, where Z represents the CD Rom Drive. Choose YES if you receive a prompt "Overwrite existing shared creative audio driver files?"
Select Driver un-installation for WDM drivers and click OK.
When prompted to restart, say No.
Click Start, Run, type MSCONFIG and press Enter.
Check the box next to Selective Startup and deselect Load Startup Items.
Select the SERVICES tab and select Hide All Microsoft Services.
Uncheck all results and click OK.
Browse to the C:\Temp folder and C:\Windows\TEMP (if it exists) - all files and folders in the temp folder need to be either deleted or moved to a new folder.
Browse to Program Files, Creative and delete the Sound Blaster Folder - if you get a file that won't delete, right click on the file, click Properties and clear all the attributes. The file should then be able to be deleted.
Empty the Recycle Bin, and reboot the computer.
If you wish to reinstall your software & drivers, do this now. For more information on how to install your product, please visit the Product Guide page for installation instructions. Otherwise, go to the next step.
Click on Start, Run. Type MSCONFIG and press Enter.
Select Normal Startup, and press the OK button.
Reboot the computer
I would then double check on board is disabled go to soundblaster.com download drivers only for your card and install those in the bottom pci slot if your cables reach that far don't share any irq with the card.
gl