No, there were no issues with GPU compatibility.
No, there were no issues with GPU compatibility.
I have an i9 9900 paired with a 4070 super. I noticed the CPU was having trouble in certain games or when I wanted higher FPS. I chose a custom 9800x3d build instead of making it myself. When the PC arrived, the motherboard would display a blank screen and the red boot light would illuminate when I inserted the GPU. I experimented with various options, spoke to the company for hours, but eventually returned it. They provided videos showing other GPUs working without issues. Now I’m compelled to purchase a 5070ti, paying more than usual plus shipping costs since the PC functioned. The company was fine with me traveling to their office for installation. I opted not to go, so I’ll sell my current GPU and PC instead. I’m trying to understand what went wrong—I’ve seen others on forums mention similar problems with Gigabyte B850 boards. Both the motherboard and card are from Gigabyte. Could it be a firmware problem on my card?
Have you tested another GPU before returning the motherboard? The "red" color could indicate a problem with your GPU. The 9800X3D includes an integrated GPU, so you might try connecting the cable to your motherboard and verify detection in Windows. Generally, GPU failures are rare, but motherboard issues are more frequent based on my experience.
The GPU performed perfectly. I don’t use it on my old PC. The company I worked for is small, and within 30 minutes of receiving my machine, they contacted me to confirm it was functioning properly with two different GPUs. I connected the HDMI cable to the motherboard and everything worked smoothly.
If you read my initial post, the company confirmed the pcie/ motherboard is fine. They sent me videos with a 4060 plugged in then a 5080 plugged in and working. This is an matx motherboard, only has space for the gpu in the top pcie.
I’d point the blame to Gigabyte for creating a subpar motherboard. I’ve seen numerous discussions about problems with AORUS boards, and even after checking which motherboard to purchase for my new PC build, Gigabyte consistently came up as the least reliable due to BIOS or hardware flaws. At that time, MSI seemed like a stronger choice (though the appearance was subjective).
Before giving up on the card, here are some checks to try:
1. Update the motherboard BIOS—Gigabyte has released several versions to boost GPU compatibility, especially with newer Nvidia cards.
2. Verify the GPU VBIOS—sometimes a vendor update is needed; Gigabyte offers these on their support site.
3. Re-seat or reset the CMOS—though simple, clearing it and rechecking RAM/GPU has stopped the red LED loops.
4. Try a different PCIe slot and turn off CSM—forcing a UEFI-only boot can resolve the black screen problem.
5. Confirm power delivery—ensure GPU 8-pins are on separate PSU rails when possible.
If others face the same issues with B560/B660/B850 boards and Gigabyte GPUs, it’s likely a firmware issue rather than a faulty card. Selling might not be needed if a BIOS/VBIOS fix works.