Hello my friend
What you are experiencing is very unusual. Could I enquire if your OS install is also brand new for this motherboard, or have you perhaps migrated the hard drive over from an older system?
The bottom line is your card should just work regardless.
I have used that combination in builds easily 100+ times during the last year or so. Therefore I feel very comfortable with the build and OS and system set up. I hope we can work through this and find a resolution.
Please bare in mind the PCIe (VGA) controller is on the CPU these days.
To help us help you - please provide as much information about your system and the problem as possible.