This is a pickle...
First thing I'd do is start clean by removing all your sound drivers with Driver Sweeper: Guru3D - Driver Sweeper
If you haven't used it before, dl it and install it, and then use it in safe mode (tap the F8 key at reboot). Select all sound drivers with a checkmark and have DS remove them.
Reboot to the bios and disable onboard audio. Reboot to Windows and install the latest DirectX; the June redist that covers all DX versions 9, 10 and 11: Download details: DirectX Redist (June 2010)
Then install your Creative Drivers and see if the problem persists. Hopefully, with everything clean and only 1 set of sound drivers, you won't lock up.