Yeah all these cards should be brand new unused, also I'm only using one card at the moment so the power shouldn't be an issue (1000W+ psu). If it's any extra help, when I plug in all 11 cards, they all come up red, despite everything being new. That why I think its a general problem rather than one specific to a card or riser.

Hey yo,

Currently in the process of setting up a new rig and am having some trouble with GPU detection after POST. For context, I'm using an ASUS B250 and it shows me a screen of which cards are working and which aren't right before launching BIOS. Anyways, on my very first POST, I had one card in and it detected fine - showed up green and everything. Then, for some reason, each time I relaunch BIOS, the slot the card is plugged into always comes up with an error. I went a tweaked around with the BIOS setting (detailed description below), but no luck. Was wondering if anyone had any ideas. Thanks!

BIOS setting changes:

- Changed primary display to CPU graphics from PCI-E

- Changed both PCIe and PCIEX16_1 speeds from Gen1 to Auto

- Disabled SATA ports 2-4 (not in use)

- Enabled Power on by PCI-E

- Disabled HD Audio Controller

No big changes really, as you can see. Also, I've tried detecting the card on both Gen1 and 2, but no luck. Ideas?