I bought my son an Asus GTX 980 video card (see MB and video card details below).  Currently, he is using a GTX560 card without issues.  Unfortunately, when the new card is installed, the MB won't post, nor will it enter the bios.  When I put the old card back in, everything is fine.  I uninstalled all Nvidia drivers and can run off of the integrated graphics just fine.  Put in the new card (tried both compatible slots)...no post.  I believe that the firmware is current, although with the GUI design of the bios, I had trouble confirming the bios build.  The motherboard was bought only a few months ago so I suspect that it was shipped with the latest bios although I could be wrong.  Trying to determine whether the video card is bad of simply incompatible with the MB.  Any thoughts would be greatly appreciated.  Thx  Rick

System setup:

Intel BLKDZ77GA70K LGA1155/ Intel Z77/ DDR3/ CrossFireX & SLI/ SATA3&USB3.0/ A&2GbE/ ATX Motherboard

ASUS Nvidia GeForce GTX 980 STRIX DC2OC 4GB GDDR5 Graphics Card