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ROG Strix B550-A Gaming never boots

Hi, I’m facing on a problem that Q-LED boot lamp lights green, and the motherboard never boots, never enters UEFI with pushing F2 and Del key.

I’ve tried anything I can do like, changing SATA cable, changing the port, removing ALL USB devices, BIOS Flashback, CMOS resetting, checking C: Drive and CPU(Ryzen 5 5600G) is alive on other computer. Of course, I renamed the .CAP file, and nothing happens.

I really appreciate your support, thank you.



Hello, @man_of_leisure 

May I ask if the situation you described happened after any changes were made?
For instance, did it occur after a BIOS update or connecting an external drive?
Regarding the situation you've described, if you have attempted the troubleshooting steps outlined in the [Motherboard] ASUS motherboard troubleshooting via Q-LED indicators and still cannot boot, we recommend referring to the "Test with minimal components, isolating the possible cause" section in [Motherboard] Troubleshooting - No Power/No Boot/No Display to isolating potential issues.

Thank you.