B550M Steel Lagend not turning on anymore
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=26234
Printed Date: 27 Jul 2025 at 6:38pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: B550M Steel Lagend not turning on anymore
Posted By: Casey
Subject: B550M Steel Lagend not turning on anymore
Date Posted: 02 Aug 2023 at 2:12am
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Hi. I'm using a B550M Steel Legend since may and it worked fine. Today I turned it off and tried to turn it back on 1.5h later but nothing happend. Specs: * CPU: 5900X * PSU: BeQuiet Pure Power 11 FM 650W * RAM: 2x 32GB Mushkin Redline * GPU: AMD 6650XT As long as the Mainboard gets power the LEDs are pulsing. When I push the power button nothing happens. No Fan spinning, non of the red status leds light up, no display signal, just nothing, like no button was pressed. Things I checked * Switched Power Button for an other Button * Removed Power and pushed Clear Cmos Button for a couple of seconds * Unplugged all unecessary cables from the mainboard, only the 2 power cables and power switch connected. * Checked the board and the PSU (as far as I can see without opening it) for any burn marks or blown condensators but all looks fine. No strange smells. From my nearly 30 years of building PCs I bet on the mainboard, but I don't have an other PSU on hand to rule out the PSU completly. But from my experience PSUs usually die complete and not partial. Any other ideas what I could also check? |
Replies:
Posted By: Casey
Date Posted: 03 Aug 2023 at 2:37am
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Today I tried it with a different PSU, same behaviour. I removed everything except the CPU and still nothing. I'm sure now, that is must be the motherboard. Broken after not even 3 month :( |
Posted By: Xaltar
Date Posted: 03 Aug 2023 at 5:04am
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You can try this: https://forum.asrock.com/forum_posts.asp?TID=630&title=how-to-clear-cmos-via-battery-removal" rel="nofollow - 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" rel="nofollow - http://event.asrock.com/tsd.asp Good luck. ------------- 
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Posted By: Casey
Date Posted: 03 Aug 2023 at 3:05pm
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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? |
Posted By: Xaltar
Date Posted: 03 Aug 2023 at 9:16pm
Most boards require a CPU to power on. Good luck  -------------
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Posted By: Casey
Date Posted: 03 Aug 2023 at 10:17pm
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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. |
Posted By: Xaltar
Date 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. -------------
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Posted By: Casey
Date Posted: 04 Aug 2023 at 3:57am
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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? |
Posted By: Casey
Date Posted: 04 Aug 2023 at 3:30pm
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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. |
Posted By: Casey
Date Posted: 04 Aug 2023 at 3:50pm
| I'm doing a another round of cmos clearing right now, hope that helps. |
Posted By: Xaltar
Date Posted: 04 Aug 2023 at 4:15pm
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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. -------------
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Posted By: Casey
Date Posted: 04 Aug 2023 at 7:49pm
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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. |