PCI Express x16 connection issue PCI Express x16 not functioning properly
PCI Express x16 connection issue PCI Express x16 not functioning properly
Hey there, I noticed you're dealing with a BIOS update on your B450 Aorus M motherboard after installing the Ryzen 5 5600. It seems the PCIe X16 slot isn't working anymore, but it functions when you switch back to the Ryzen 5 2600 PCIe X16. This might point to a BIOS-related issue. Let me know if you need more help!
No known BIOS settings restrict PCIe lanes beyond link speed. Besides the graphics card, there are other PCIe devices available.
I reinitialized the BIOS (CMOS reset), updated it a few days back just to see if that would help, but it didn’t. It’s strange that the PCIe slot still works with the old CPU.
I own a m.2 SSD, but I attempted to start BIOS without using it, and it didn’t work.