B550M Steel Lagend not turning on anymore

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   PC is booting again. :)

I will do stability testing in the evening. 

Hopefully this was all one time thing. At least when any of this happens again I will try a cmos clear first. :D

Thank you again.

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Casey Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Aug 2023 Status: Offline Points: 125	Post Options Post Reply Quote Casey Report Post Thanks(0) Quote Reply Topic: B550M Steel Lagend not turning on anymore Posted: 04 Aug 2023 at 7:49pm
	PC is booting again. :) I will do stability testing in the evening. Hopefully this was all one time thing. At least when any of this happens again I will try a cmos clear first. :D Thank you again.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 27473	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 04 Aug 2023 at 4:15pm
	That is possible yes. Unfortunately modern CPUs are a lot more prone to dying than they ever used to be, it's most often the IMC (memory controller on the CPU) that dies. It's still rare but not as rare as it once was. You should be able to RMA the CPU without issue though. Good luck and let me know how it goes.


Casey Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Aug 2023 Status: Offline Points: 125	Post Options Post Reply Quote Casey Report Post Thanks(0) Quote Reply Posted: 04 Aug 2023 at 3:50pm
	I'm doing a another round of cmos clearing right now, hope that helps.

Casey Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Aug 2023 Status: Offline Points: 125	Post Options Post Reply Quote Casey Report Post Thanks(0) Quote Reply Posted: 04 Aug 2023 at 3:30pm
	Tried the other PSU and connected a speaker to the board. Same behaviour an no beep codes. CPU looks fine on the outside and no broken pins or burn marks.

Casey Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Aug 2023 Status: Offline Points: 125	Post Options Post Reply Quote Casey Report Post Thanks(0) Quote Reply Posted: 04 Aug 2023 at 3:57am
	The PSU is quite new, from january. It's also the one currently installed now. The other PSU with whom I tested was quite old. When I first tried to power on the system after the cmos clear I noticed the CPU and DRAM leds were on. I didn't think much about it at the time because I hadn't connected the CPU fan and hadn't installed the DRAM. Just now I gave it another try before putting it in the case and both leds are still on. CPU Fan is connected and DRAM installed. It's late here and I will continue tomorrow but I have a bad feeling about it. From searching it looks like the CPU may have died. Would that fit with the tripped safeties?

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 27473	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 04 Aug 2023 at 2:47am
	Awesome, glad I could help It shouldn't be a recurring issue, likely the old PSU tripped a safety. The board ordinarily should return to normal once a new PSU is installed but sometimes the safety can get stuck on when the board's capacitors are not fully discharged before a new PSU is connected. The safeties require the power to be completely drained from the board before they disengage, it isn't a glitch. Generally the time it takes to remove a damaged PSU and replace it with a new one is enough time for this to happen. When it isn't, the steps I listed usually resolve the issue.


Casey Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Aug 2023 Status: Offline Points: 125	Post Options Post Reply Quote Casey Report Post Thanks(0) Quote Reply Posted: 03 Aug 2023 at 10:17pm
	While the Internet said otherwise you are correct. The board needs a CPU to power on. I had not much hope but removing the cmos battery really helped. I just hope this was a one time problem and it will not happen again. Thank you.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 27473	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 03 Aug 2023 at 9:16pm
	Most boards require a CPU to power on. Good luck


Casey Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Aug 2023 Status: Offline Points: 125	Post Options Post Reply Quote Casey Report Post Thanks(0) Quote Reply Posted: 03 Aug 2023 at 3:05pm
	I unpacked the board (allready packed for shipment to the store) and it now sitting there without a cmos battery und closed clear cmos. I truely hope it works. Can I start the board without a installed CPU and what should happen in this case?

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 27473	Post Options Post Reply Quote Xaltar Report Post Thanks(1) Quote Reply Posted: 03 Aug 2023 at 5:04am
	You can try this: https://forum.asrock.com/forum_posts.asp?TID=630&title=how-to-clear-cmos-via-battery-removal If a power safety is stuck on it might clear it and allow the board to power on again. Modern PSUs more often than not partially fail these days, either through increasing ripple or voltage droop as capacitors wear out. PSU manufacturers have done a lot to mitigate actual blow outs like we used to get, those often caused cascading damage to other components. As standards and safeties have improved it has become rare for a quality PSU to suddenly just stop working entirely. The reason I mention all that is because it can cause power safeties to trigger on motherboards when ripple exceeds a certain threshold or droop causes voltages to fall below a certain level. Sometimes these safeties can get "stuck" and even a new PSU seemingly doesn't solve the issue. Leaving the system disconnected from power over night after pressing and holding the power button to fully discharge the capacitors is often all that is needed to revive the board. If none of that helps, contact the store you bought it from and see if you can still RMA the board under warranty. If not, contact ASRock and inquire with them: http://event.asrock.com/tsd.asp Good luck.