H55m Pro addon vga

[RhoAius]

Hello everyone,

I have:
CPU: Intel i5-660
MB: Asrock H55m Pro
GPU: Asus 560 ti top

Yesterday I placed the video card in this rig and all went fine. Played for the whole day with no problems.
Eventually I shut down the PC and went to bed. This morning when I started it the video card does not give me output.
It does not light up showing it has errors at boot time and the fans are working normally.
Thing is i plugged my monitor in my onboard VGA and it boots on the gma. In bios PCI Express has priority but is still uses the onboard VGA.
I reinserted the videocard and still no go.
Any thoughts on the matter?

P.S.: Bios version is P2.20

L.E. I placed the videocard in the second PCI Express port (white slot) and windows recognizes it. Now I have 1 monitor on each video card.
Does this mean that my primary PCIe died or do i need to do some tweaking in bios? as it currently runs on default settings.
I need the rig to work on a single vga card preferably the 560 :) as this second slot only has x4 lanes.
Is there a newer bios i can try ? Should I re-flash with p2.20 or a older one? Are there any beta drivers apart from the 1.99 ones ?

Thank you.