X670E PG Lightning no POST on cold boot

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   Latest BIOS 3.50 is not targeted at this issue.

My research shows most users with similar issue can pass a cold POST only if they run the PC for a while and then restart it. So this is most likely a power delivery on start issue. 

E.g. faulty PSU voltage line to CPU or mobo, faulty BIOS battery, anything related to voltage power droop when capacitors are discharged for cold boot (could be PSU, CPU or Mobo hardware problem). 

Problem may be partially or fully remedied by swapping components or changing voltage settings in BIOS.

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vrock442 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Sep 2025 Status: Offline Points: 90	Post Options Post Reply Quote vrock442 Report Post Thanks(0) Quote Reply Posted: 3 hours 41 minutes ago at 4:13pm
	Latest BIOS 3.50 is not targeted at this issue. My research shows most users with similar issue can pass a cold POST only if they run the PC for a while and then restart it. So this is most likely a power delivery on start issue. E.g. faulty PSU voltage line to CPU or mobo, faulty BIOS battery, anything related to voltage power droop when capacitors are discharged for cold boot (could be PSU, CPU or Mobo hardware problem). Problem may be partially or fully remedied by swapping components or changing voltage settings in BIOS.