Ok, looks like I'm not so good at this. I had the only graphics card blocking the only LED readout of what the post issue is.

Motherboard won't POST. Giving error code 89. Not sure what that is, manual says something about PCI devices and memory. Tried removing everything from the PCIe slots, didn't help. Tried removing and re-seating the memory, didn't help. Now it's time to do some research to see what this new foe "89" is doing to my machine.