No Full Boot after PCIe Power connector

It's strange connecting the extra power connector for the PCIe slots seemed to cause a major issue for you. All that connector should do is supply more +12V power to the PCIe slots.

Normally if more power is required for video cards, a warning message is displayed. But I don't think connecting your PSU to that connector would cause a problem if more power was not needed. Your idea is logical since a '630 video card only uses power from the PCIe slot. The manual states connecting power to the connector should be done when using more than three video cards, but does not give any warnings about its use.

Did you try clearing the UEFI/BIOS after removing the power cable from that connector?

Do you have a POST code beep speaker connected to the board? If not, trying one might give you a clue about what is wrong.

Can you test the video cards in another PC? I hope they are not damaged, but you never know.

I don't understand why you think the memory may be damaged, except for the close proximity of that connector to the memory. The memory voltage regulators aren't near that power connector.

I hope that connecting a cable to that connector did not cause it to short circuit on the mother board tray of the PC case.

KenG wrote: I'm hoping I just fried the RAM, because that'd be a relatively easy fix.

Ken, you seem to have a problem with power, whether it be the boards delivery(not good), or the PSU(easily remedied) itself.

Yet strangely you fail to list what your PSU is, its Model Number, and its age. Care to do that please?

I'm always stumped when people don't list out their PSU, as I well know that it happens to be the last item upgraded and also the last item to be considered to be at fault. It seems everyone takes their PSU for granted. Re-using it year after year allthewhile upgrading the other components many times over.