Question MSI MPG X570 motherboard RED LED no CPU detected No post

Jan 28, 2020
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Hello,
Pulling my hair out. Brand new build, getting the red led for CPU not detected. Never posted, blank screen. Then that led goes away after a while and the VGA led comes on and stays on. I've taken the system down to nothing except 1 ram stick in the 2A slot, and just the CPU (reseated). Tried flashing many times, swapped ram sticks, etc everything. PSU is new and fully connected. RAM and CPU are verified compatible with the mobo on MSIs site.

Here are the parts:
AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor
MSI MPG X570 GAMING PRO CARBON WIFI ATX AM4 Motherboard
G.Skill Ripjaws V Series 64 GB (4 x 16 GB) DDR4-3200 Memory
EVGA SuperNOVA G3 850 W 80+ Gold Certified Fully Modular ATX Power Supply

Please help, getting ready to RMA all 4 parts listed because I have no other systems to test them on.
 
Dec 27, 2019
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Jan 28, 2020
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Thanks everyone, once I popped in my GPU and connected to that (I was omitting it to make troubleshooting easier), one of the many things I tried worked and we're up and running! Already got windows installed, actually.
 

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