I'm having a major issue with my setup. I have an AMD Ryzen 9600x CPU and an RTX 5070 GPU, but I'm only getting a signal from the integrated graphics. I've checked the specs, and my RAM is T-Force CL 38 6000MHz and the motherboard is an Asus PRIME X870-WIFI. Here's what I've tried so far: I ensured the primary video device is set to PCIe instead of integrated graphics, reset the BIOS multiple times, confirmed the GPU is properly plugged in, and tested both my GPU and another in different slots. I've also verified the GPU connections via the BIOS. I'm stuck now and haven't yet tried moving the motherboard around or updating the BIOS with a flash drive. Any suggestions?
5 Answers
Check out page 56 of the BIOS manual for your motherboard. It might have some specific settings that could help with video output not being detected. I can’t guarantee what you’ll find, but it’s worth a shot!
Good to know you're using the right cable. Since you mentioned the PSU is a Corsair RM850x, make sure the cables from it to the GPU are properly secured. You might want to eliminate power issues by either trying a different power cable or even a different power supply, if you have one.
Also, make sure your settings in the BIOS allow video output to be selected as PCIe. Sometimes it's easy to overlook the BIOS settings, even if you think you've set them correctly already.
It’s already set to PCIe.
First off, double-check that the HDMI cable is actually connected to the GPU and not to the motherboard. That's a common mistake!
Yes, I should clarify the monitor worked fine with the GPU in my old build. The BIOS will only post through the motherboard in my new setup.
Ensure the 12 pin power cable is seated properly in the GPU. It should be completely plugged in with no gaps at the connectors. If it’s loose at all, it could cause issues, even if the fans are spinning.

I haven’t looked at that yet; I’ll check it out now.