don't use the drivers off the cd,always download latest sound/gpu drivers off the makers website
they will be far newer
What model did you you go for?
It might be worth get a photo of the errors and post a note in the customer section with the photo. If this pre-Overclocked then you could still have faulty memory on the card, least with doing the various tests above you can rule out other factors of the system.
could be something to do with the uefi bios on the gpu
are you using award motherboard bios or latest beta uefi? maybe worth trying uefi