You may need to test the video card again in another system to see if the video card is still functional (in case it was stored after being removed from the other systems you mentioned).
Additionally, be sure to be using the latest BIOS for that motherboard posted at:
Also update the firmware of that video card (to do this, check directly with the respective video card manufacturer)
Furthermore, another power supply may be tested. The minimum recommended for this motherboard is 460W and you ar using a 350 W power supply, this may be related to lack of power resources. This is stated on the page 60 of the technical product specification (TPS) posted here:
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1. The video card is almost new (some month old) and functional (tested it again for shore) and there is no firmware available for this video card.
2. Recommendation to change power supply is meaningless in this case because this video card uses max 65W, CPU uses max 55 W, RAM uses max 3 W, HDD uses max 7W. Lets sum it and we have 130 W consumption on all system what means we still have 220W (with 350W power supply) to run all coolers, USB ports, leds, and other peripherals and the same motherboard itself. If we are going to follow all recommendations from all manufacturers on recommended power supply, we are going to need our own power plant to run system as "manufacturer intended " .
3. I manage to get another video card ATI Radeon Gigabyte (ATI Radeon X700). I put it in PCIe slot and this card worked with no problem in motherboard Intel BLKDH77EB.
4. I removed Radeon and put back in GeForce once more and there comes unexplained happening - video card was recognized and worked normally without any BIOS updates, another power supply and any other changes. So it seems as Radeon somehow activated this PCIe slot.
5. To be shore I updated BIOS (to update BIOS was another pain in a...) and video card still worked, so seems there shall be no problems.
Well I guess (hope) that this was some random error, however I found some other topics about Intel m-boards which doesn't recognize exactly Nvidia cards, maybe manufacturer should pay attention to this.