Greetings and welcome to the forum.
As suggested you should "bench test" this system outside the case. Do not attach any storage devices until you can access the BIOS during the POST. Only have one memory module installed too.
A few questions as you are using a FX-9590:
1) did you observe ESD precautions; ESD (aka static electricity) is responsible for a number of RMA's
2) you need to have all three of the following power connectors populated:
- Aux 4-Pin CPU Power
- Aux 8-Pin CPU Power
-EZPLUG (Molex connector) near the PCIe Slots
3) press the clear BIOS button in the back
4) can you verify that the PSU is working on another system?
I believe that the 1801 BIOS supports your CPU.
It very could be the board or less likely the CPU at this point (my money is on the board though)
Keep us posted on your progress and it would be good to hear what the problem was once you get your system up and going!
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For trouble-shooting tips see my blog at:
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http://thenerdbench.blogspot.com/p/bench-testing.html
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MB: Crosshair V Formula-Z • CPU: FX-8350 • GPU: Asus Matrix R9 280x • RAM: 8GB of Crucial Ballistix Tactical Tracer (1866)• PSU: Thermaltake DPS Thoughpower 750 Watt • CPU Cooler: Thermaltake Frio Advanced • Keyboard: TT Sports Challanger Ultimate • Mouse: TT Sports Black Element • Case: Thermaltake GT Level 10
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