Good day and sorry if this was posted before but I'm searching for a solution for 3 days now and it's kind of nerve wrecking. So, I used to have a Gigabyte Mainboard (78LMT UBS3) which broke down eventually so I bought myself an ASRock 970 Pro3 R2.0. When I used the Gigabyte Mainboard I had 2 Monitors running, my BenQ GL2450 on my HDMI slot and my Flatron L222WS on my DVI slot, both ran smoothly without any problems whatsoever. Since I installed the new mainboard windows isn't even detecting something that is plugged in my HDMI slot anymore. I can't open or access the second monitor whatsoever. What's really really confusing is, is that everything worked fine before. I'd really really appreciate any help.
My complete Specs are this:
GPU: GeForce GTX 660
CPU: AMD FX-8320
Mainboard: ASRock 970 Pro3 R2.0
Operation System: Windows 7 Ultimate
Monitor 1 on DVI: Flatron L222WS
Monitor 2 on HDMI: BenQ GL2450
Things I did do:
Reinstall every driver (GPU, Motherboard, both monitors)
Check if the GPU is not in firmly
Test different cables (even my cable from my Playstation didn't get detected
)
Disable Secure Boot (Was disabled in UEFI from the beginning on)
Enable USB Legacy Devices (Was enabled in UEFI from the beginning on)
What I did find out:
On the graphics card site stands that the GPU isn't UEFI compatible or sth, I searched if this could be the problem but couldn't find out anything. Also if the GPU wouldn't be compatible I couldn't access the PC whatsoever since the mobo hasn't got onboard graphics.
Once again, thank you very very much in forward, appreciate any kind of help!
My complete Specs are this:
GPU: GeForce GTX 660
CPU: AMD FX-8320
Mainboard: ASRock 970 Pro3 R2.0
Operation System: Windows 7 Ultimate
Monitor 1 on DVI: Flatron L222WS
Monitor 2 on HDMI: BenQ GL2450
Things I did do:
Reinstall every driver (GPU, Motherboard, both monitors)
Check if the GPU is not in firmly
Test different cables (even my cable from my Playstation didn't get detected

Disable Secure Boot (Was disabled in UEFI from the beginning on)
Enable USB Legacy Devices (Was enabled in UEFI from the beginning on)
What I did find out:
On the graphics card site stands that the GPU isn't UEFI compatible or sth, I searched if this could be the problem but couldn't find out anything. Also if the GPU wouldn't be compatible I couldn't access the PC whatsoever since the mobo hasn't got onboard graphics.
Once again, thank you very very much in forward, appreciate any kind of help!