I did try the obvious, sadly no sound on either MB or SB
Surprised if the SB is DOA as everything seems to be recognised. I cant believe i can be getting same issue before and after buying a SB - can I be that unlucky? Which returns to me to the thought that something has happened to the motherboard
I dont want to be patronizing - it's just after 15 years of hardware support you tend to think the worst...... but you did unplug the speakers from the MB and plug them into the SB Xtreme, right? Because if you did the only things I can think of are-
1) The SB X-FI Xtreme is DOA
2) You have gone profoundly deaf
Have you access to another PC to test the SB card on?