PC does not start despite having a properly installed pcieX4 usb c riser card
PC does not start despite having a properly installed pcieX4 usb c riser card
Mobo x570 taichi GPU 3080 uses a vertical PCIe 4.0 slot and a top-mounted PCIe X1 slot. An extension cable is plugged into the back of the case via a riser card with USB 3.0X2 connectors, including some headers for 2X USB 2.0. Connecting a PCIe 3.0 extension cable to the other X8 slots causes the PC to loop through multiple postcodes without displaying anything. The fans spin and power reaches the monitors at startup, though the screen remains dark. This suggests a potential issue with the cable types or bandwidth requirements.
explore bios details and try manually setting PICe3.0 on the PCIe slots. if unsuccessful, disconnect the GPU, launch the screen using integrated graphics, then install the 3.0 driver. this may help pinpoint the issue.
Consider using a PCIe 4.0 cable if you need the latest performance and compatibility.
Getting a PCIe4 cable doesn't guarantee a fix. There's still a chance that the slot is busted. Depends on how much your time is worth. There's 2 ways of fixing a problem, finding out what the problem is, or throwing parts at it until it's fixed. One cost time the other costs money. You'll have to decide if you wanna spend the time figuring it out, or spend money on it and spend the time you save on making money.
Keep the GPU connected, navigate through the BIOS settings. It’s safe to browse without saving anything. I understand it might seem overwhelming with all the terms and abbreviations, but you just need to search for PCIE and speed-related options under 3.0 and 4.0.
Your 3080 fe might run a bit slower on 3.0, depending on the game and settings.
The 4090 ran about 1-4% slower on 3.0, which makes it unlikely. Unless you're running other tasks besides gaming and those depend a lot on bandwidth.