There are many things we need to test on your system in order to find out if this is a compatibility issue between the motherboard and the video card.
As per troubleshooting steps, please try this:
- Test a different power supply (higher if possible).
- Clear the CMOS by removing all components from the board (power supply, battery, hdds) for about 20-30 minutes and then reconnect them again.
- Disconnecting the Power supply from the board for about 20-30 minutes will clear all power from the unit and in that way we can discard any possible short or static energy
- Test the system out of the chassis, just in case there is something causing a grounding problem.
- Try installing a firmware update for the video card.
- Have you tried the video card in a different motherboard? Can you also try on Safe mode?
Bear in mind that the motherboard is at this point a mature product from our side and is an end of interactive support unit.
Nowadays almost all the video cards are backwards compatible with PCI technology meaning the card you have is PCIe 3.0 should be backwards compatible with PCIe 2.0.
If the issue persists, my best recommendation is to contact the card manufacture since this could be related to a compatibility issue.