motherboard Intel dp55kg hangs at post when R5-220A-2QHR is installed

I just built a system using  DP55KG motherboard, Xeon 3470 2.93 MHz processor, 16 gig Corsair DDR3, 240 SanDisk SSD, AMD R5-220A-2QHR Video, Windows 7 Pro Srvc Pk 1, and 6 TeraByte in HDs.  Upon initial boot, board hung and would not complete POST. After I swapped to lesser video board, it booted fine.  Did BIOS update and then Windows install.  Tried Card again and same problem, Hangs on POST.