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Cannot get PC to boot after turning on EXPO

I built my PC and it successfully booted into Windows and I installed all the drivers, etc.

 

I went to turn on EXPO and no boot after 10 minutes. I cleared CMOS with wire and still no boot. I removed and replaced CMOS battery and still no boot. I flashbacked BIOS and still no boot. 

 

My motherboard is Asrock B650 PG Lightning

CPU: Ryzen 7 7800X3D

RAM: 2x 16GB G.Skill Flare X5 6000 30-38-38-96

The CPU and DRAM lights are both on. Is this just an extremely long memory training or is something else the problem?

 

 

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15 minutes ago, archsmite said:

Is this just an extremely long memory training

Not for ten minutes. Memory training on AM5 usually takes ~30 seconds on the newer BIOS revisions, 1 minute if you're using 2x32GB/2x48GB, and 5 minutes at the absolute worst with 4x32GB/4x48GB. 

 

What exact RAM kit are you using, and are you using slots 2 and 4 counting from the CPU? Also what BIOS revision are you on?

 

17 minutes ago, archsmite said:

I removed and replaced CMOS battery and still no boot.

Some AM5 boards have the CMOS clear function broken and need to have the 24 pin disconnected in order for it to work. Try disconnecting the 24 pin, clearing CMOS again with the button or battery method, and seeing if it starts working again. 

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24 minutes ago, RONOTHAN## said:

What exact RAM kit are you using, and are you using slots 2 and 4 counting from the CPU? Also what BIOS revision are you on?

2x 16GB G.Skill Flare X5 6000 30-38-38-96 and bios version 2.10 from Asrock

 

24 minutes ago, RONOTHAN## said:

Try disconnecting the 24 pin

I will try disconnecting the 24 pin now.

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Removing the 24pin and clearing CMOS produces the same result with DRAM and CPU motherboard lights being on.

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18 minutes ago, archsmite said:

Removing the 24pin and clearing CMOS produces the same result with DRAM and CPU motherboard lights being on.

Alright, that was more an issue on the older BIOS revisions anyway, 2.10 should be new enough to not have that bug. 

 

At this point I'd be trying to reseat the memory and doing a single stick in each slot to see if one of the memory slots or sticks died out of no where. 

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Both sticks in all 4 slots failed to POST 😞 

Am now looking at CPU.

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Swapped CPU to a 7600x and it booted up! 

 

Turned EXPO on again and it appears to be having the same symptoms.

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Swapped back to 7800X3D and it's not booting still. Also at some point, case fans now start up and stop after a few seconds. I'm totally at a loss for what to do.

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