So is my ASRock Z97 Extreme9 dead?

Got a new PSU. Still no joy. :(

Not a new build. The Mobo is less then a year and a half old, and the PSU is maybe 3 years old. I just tossed my old 450watt psu. :( When the sun comes up, I'm going to call around and see if any friends have a PSU laying around.

If the PSU has begun to fail then you wouldn't get a beep out of the system. As Parsec noted, you should try a different PSU on the system. There is very little I hate more than RMAing something only to either have it sent back because it wasn't the problem or get a replacement only to discover the problem is still there. I have 5 or 6 PSUs knocking about from various old systems as I tend to replace mine every time I upgrade even when they seem ok. They make great testing units as well as temporary stand ins when one of my systems fail. The reason I replace the PSU every upgrade is because they are an exceedingly common fail point, even the highest end PSU can fail. 

Your PSU test proved the 12V rail under very low load works Ok. The 5V and 3.3V rails have not been tested at all. Drawing less than 1 Amp from a 12V rail rated at ~50 Amps is not a tough test.

But the failure to start may be caused by another component having a problem. Like a storage drive, video card, etc. Some power supplies, when sensing a problem on one of the cable connections, will not apply power to that cable, or not start the PSU at all.

Standard trouble shooting would call for trying a different PSU.

What you can do with your modular power supply is, with the PSU shut off, unplug one of the peripheral power cables at a time until (hopefully) the board starts.

Or remove all of the peripheral cables, except power to the board. Use the CPU onboard graphics for this test, which means removing the video card or at least any power cable to the card. If the board starts, then start reconnecting power cables one at a time until it fails to start.

When power is removed from a board, such as turning off the PSU or unplugging it from AC power, when it is reconnected again, few if any of the LEDs on the board come on. That is normal.

But whenever I reconnect my PCs to power or turn on the PSU, after a few seconds the network link and activity LEDs next to the network jack(s) start flashing. That's how I know the board is at least partially alive.