I'm having an issue with my newly upgraded GPU and could use some help. I recently upgraded the graphics card in my old Acer TC710 to an RX 5500 XT, along with a 500W EVGA power supply. Unfortunately, I can't fit the card directly into the motherboard due to a power cable blocking the PCIe slot, so I'm using a ROG Strix 3.0 riser cable. The card seems to be working since I'm getting a display without drivers, but the problem is that it doesn't show up correctly in Device Manager.
Initially, I faced a freeze on boot after uninstalling Nvidia drivers, followed by a black screen until I changed the CSM mode in the BIOS. Now, when I try to install the AMD drivers, it says I don't have compatible AMD hardware and identifies the GPU as a PCI Express upstream switch port instead of the actual card. I suspect it's a communication issue between the card and my motherboard since the board supports PCIe 3.0 while my card is PCIe 4.0. One troubleshooting attempt I made was to tape over the 11th pin to force it to 3.0, but that prevented the card from starting up at all.
A friend suggested updating the BIOS since my current version is from 2015, while the latest ones are from 2022. I'm hesitant about that since I haven't updated it in a while. I'd appreciate any guidance on what I can do before diving into a BIOS update! Thanks!
2 Answers
It sounds like you're dealing with a pretty frustrating issue! The riser cable can sometimes cause recognition problems with newer GPUs on older motherboards. First, double-check that the riser cable is fully seated in both the motherboard and the GPU. If you haven’t already, try reseating it, and make sure there are no loose connections. Also, if possible, consider trying a different riser cable just to rule that out. As for the BIOS, updating it could definitely solve compatibility issues, but make sure to follow a tutorial carefully to avoid any mishaps. Good luck!
I completely feel your pain! Sometimes the combination of older hardware and new components can lead to unexpected problems. Since you mentioned running DDU, that’s a great first step! Have you also tried booting into safe mode and uninstalling any remnants of old drivers? Once you've done that, try running a clean install of the AMD drivers again. Also, using the tape on the 11th pin might lead to other complications, so you might want to remove that and see if there's a better solution. Updating the BIOS is definitely worth considering, especially if your version is that old! Just make sure you’re comfortable with the process; there are plenty of guides out there.
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