Unfortunately Qcode 00 can be one of many things.
First make sure all cables and connections to the MB are secured and populated including 24pin,8pin, and 4pin if available.
I noticed you have re-seated your CPU and trust you re-applied your TIM correctly and did not over-tighten the cooler bracket. Try easing them off slightly.
If Qcode 00 continues, then you will have to Benchtest outside your case as there may be a short to the MB standoffs.
When in Benchtest mode, Just have power to the MB in minimalist state. Power up the system and check your Qcode led.
Progressively add hardware components one at a time and check the Qcode each time as you add hardware. Report the Qcode if not sure.
The Qcode will identify the culprit or hopefully you will get to Qcode AA or AC indicating your system has transitioned to ACPI and ready to hand over to your OS.
I know it's a pain in the proverbial, however its the only real solution with Qcode 00.
BTW: Do not have your slow mode switch on and put the LN2 jumper back. This will not work.
Please report back.
We owe our existence to the scum of the earth, Cyanobacteria
My System Specs:
MB:ASUS ROG Crosshair VII Hero/WiFi GPU:EVGA GTX 1080 sc PSU:Corsair AX-1200i
CPU:AMD R7 2700X Cooler: Corsair Hydro H115i Case: Corsair Carbide 780t
Memory:G.Skill TridentZ F4-3200C14D-16GTZR SSD:Samsung 500GB 960 EVO M.2
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