I recently bought a cheap ATI Firepro V4900 and it came with a displayport to vga cable adapter, I installed it on my motherboard and plugged in the adapter and my monitor, changed the bios settings and installed the drivers but there's no display, the graphics card is recognized in windows device manager and it shows its specs in speccy, cpu-z and gpu-z. I wonder if it is possible that those programs could detect a gpu that doesn't work or if it's the displayport to vga cable adapter that doesn't work. Thanks