X670E PG Lightning no POST on cold boot

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   Thanks for the info DontAsk. 4.10 seems to be resolving quite a few issues which
is great to see. 

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Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 36048	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Topic: X670E PG Lightning no POST on cold boot Posted: 08 Mar 2026 at 4:25pm
	Thanks for the info DontAsk. 4.10 seems to be resolving quite a few issues which is great to see.


DontAsk Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Sep 2025 Status: Offline Points: 180	Post Options Post Reply Quote DontAsk Report Post Thanks(1) Quote Reply Posted: 08 Mar 2026 at 4:04pm
	I already updated the BIOS of my X670E PG Lightning and the issue "no boot after a temporary disconnected power supply" which has been introduced with v3.40 then continued with v3.50 is solved with v4.10. Hint: The included Agesa version behaves different regarding the memory trfc values. The values trfc2 and trfcsb are now important thus if you manually adjusted/reduced these in a profile based on a previous BIOS version then it could be that your PC won't boot --> clear CMOS and go with default values or test with more conservative values ...

Armus Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 08 Mar 2026 Status: Offline Points: 15	Post Options Post Reply Quote Armus Report Post Thanks(0) Quote Reply Posted: 08 Mar 2026 at 3:12pm
	Did anyone try version 4.1 yet?

Pabblo77 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 Dec 2025 Status: Offline Points: 15	Post Options Post Reply Quote Pabblo77 Report Post Thanks(0) Quote Reply Posted: 21 Dec 2025 at 9:01pm
	I was struggling with the same problem, x670e PG Lighting, Ryzen 7800x3d, 2x32GB ram 6000Mhz, Memory Context Restore to Disable did not help, only as colleagues mentioned downgrading the BIOS to version 3.30 eliminated the problem.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 36048	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 14 Nov 2025 at 11:30pm
	If you are not using a 9k series CPU then you can just stick with 3.30 for now until user reports indicate the issue has been fixed on a future update. I am not speaking for ASRock here, just a moderator giving my recommendation. As far as I am aware there is no benefit to 7k series CPU users in updating past 3.30 on your board currently. I honestly wish AMD would get their act together. They have bred a very unhealthy culture of obsessive BIOS updating, so much so people actually think BIOS updating is essential these days rather than something you only do for new CPU support or for the odd security update as it should be. It should be a case of: "If it ain't broke, don't fix it".


karzinogen Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 14 Nov 2025 Status: Offline Points: 15	Post Options Post Reply Quote karzinogen Report Post Thanks(0) Quote Reply Posted: 14 Nov 2025 at 7:36pm
	Similar issue here. After flashing 3.40 and configuring everything (PBO, CO, XMP), everything is running rock-stable, just as it did before. But the system won't cold-boot after shutdown, except CMOS is resetted. Power supply was on mains power between boots. After going back to 3.30 everything is perfectly fine again. Haven't tested 3.50 after users reported it's not fixing the issue. Build specs: AMD Ryzen 9 7950X 2x 32GB G.Skill F5-6000J3238G32G DDR5-6000 XFX Swift Radeon RX 9070 XT

Limpster Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 05 Oct 2025 Status: Offline Points: 15	Post Options Post Reply Quote Limpster Report Post Thanks(0) Quote Reply Posted: 05 Oct 2025 at 8:39pm
	Just wanted to chip in and say that I got the same issue after updating the BIOS to 3.40 (and also 3.50) with cold boot. Downgrading to 3.30 solves the issue. Had the same issue back in the day with my ASRock Z170 OC Formula after cold boot, never solved it (even changed CPU, RAM, Power Supply and GPU without success) and got myself another board (different brand), worked plenty of years without any troubles with the new board. I don't see the point in changing my hardware when the problem is -as it seems- BIOS related. My components are brand new, working flawlessly with 3.30. The issue is the BIOS or some setting (related to the newer BIOS versions) which I coulnd't figure out yet. The problem only occurs to me when shutting the pc down and cutting the power completely (removing power cord/switch the power strip off), but if I just shutdown the PC and restart it the next day/hours later without cutting the power, it boots fine (no such issue with 3.30). It also doesnt matter if I leave the RAM at default settings (=not EXPO/OC related in my opinion), PC won't boot after cutting the power.

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: 05 Oct 2025 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.

DontAsk Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Sep 2025 Status: Offline Points: 180	Post Options Post Reply Quote DontAsk Report Post Thanks(0) Quote Reply Posted: 04 Oct 2025 at 2:12am
	Unfortunately the new BIOS 3.50 continues this bug from BIOS 3.40. Back to BIOS 3.30 and no issues. BTW, I use a power strip with a switch thus if I switch the power on that strip and press the power button at the PC it always starts without issues since the last 2 years but only with BIOS versions older than 3.40. With the versions 3.40 and 3.50 it will never start.

DontAsk Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Sep 2025 Status: Offline Points: 180	Post Options Post Reply Quote DontAsk Report Post Thanks(1) Quote Reply Posted: 27 Sep 2025 at 1:21am
	Next week, this motherboard will likely be one of the last to receive BIOS v3.50 (includes Agesa 1.2.0.3g). Hopefully, also the above mentioned cold boot bug which only exists in BIOS v3.40 has been silently fixed. We will see ...