Riddle me this. B550M Pro4 won't post
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=17197
Printed Date: 06 May 2024 at 9:53pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Riddle me this. B550M Pro4 won't post
Posted By: kozywozy
Subject: Riddle me this. B550M Pro4 won't post
Date Posted: 09 Nov 2020 at 3:27pm
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I am at a loss and all my computer knowledge is put to the test with this issue so any suggestions from now on are kindly appreciated. First of all specs CPU: Ryzen 3 3100 Mobo: B550m Pro4 Memory: F4-3200C16D-16GIS by G.Skill 2x8GB GPU: MSI GT 720 SSD: Samsung 960 evo 256GB CPU cooler: Noctua NH-D9L PSU: TR2 RX-450 (old I know but was working fine) Build this system and everything run smoothly from the first go. No troubleshooting leds lighting up and posted just fine. Installed OS (WIN 10) no problem, configured some network stuff because I wanted it to be able to use remote desktop and wake on lan all good. Rebooted updated bios, set XMP and went to OS again all without a glitch. Downloaded A-Tuning and Ryzen Chipset drivers to control fans and set up ryzen power plan and then left the PC running. For two days all were good. On the third I left the PC running and went on some errands only to come back to a blank monitor. The power led was on so I thought it went to sleep or something but after further inspection nothing was working. Pressed the button continuously for a hard shutdown, nothing. Opened the case and saw that two leds were lit. The DRAM and the CPU. First thing I did swapped the PSU with another one I know it was working cause I am using it at my backup file server. It is old but I know it runs OK. I knew the other one was running OK too but just in case. Same behavior. Leds light up instantly no post. Used third PSU from my main file server which runs flawlessly 24/7 No Post leds on Cleared CMOS both jumpers and battery No Post leds on took everything out to eliminate a short No Post leds on Reseated ram to A1 B1 No Post leds on Reseated single stick to all positions No Post leds on Tried different stick from my main PC No Post leds on Installed RAM on main PC worked on first boot and after a memtest 0 errors Installed CPU and RAM on main PC, everything works and boots up fine At this point I was sure it was a motherboard issue so I sent it back for a DOA. Two days later I got a response and images that the motherboard with their test CPU, RAM and GPU was running great. It posted and even booted into windows on first try. At this point I am kind of at a WTF stage. I received the motherboard back, went to install all parts again and... No Post leds on Tried my other CPU from main computer 3950X and also the GPU Quadro P2000 No Post leds on Did the same with all three PSU's I have and No Post leds on So I an now clueless and I have no idea what to do next, mind you returning the board is not an option since for some strange reason when it leaves the home it works.  No moving house is not an option and yes I did try it on different wall outlets that run on different circuit. Even powered it through my UPS but nothing. Any suggestions would be more than welcome. |
Replies:
Posted By: Xaltar
Date Posted: 09 Nov 2020 at 4:31pm
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Ah, gremlins, oh how I don't miss dealing with them back when I used to do call out work  Troubleshooting this kind of issue amounts to figuring out the answer to the question of: What haven't I checked? So we know the board checked out ok when you sent it back, we know the CPU and RAM are good because you tested them in another system. What, if anything, from the original, non functioning setup is still involved in your testing and I mean anything. SATA cables, display cables, power cables, fans, add in cards, network cables, front panel headers (disconnect them), front panel USB, splitters, peripherals, flash drives. Rule out literally everything by using a completely different setup. I have seen a system fail to post because of something as silly as a bad front panel USB 3.0 cable. As soon as it was unplugged the system came to life. You clearly know what you are doing and have done a great job troubleshooting so far so I have tried to suggest a few of the more easily overlooked options to try out. Good luck and let us know how it goes. ------------- 
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Posted By: kozywozy
Date Posted: 09 Nov 2020 at 5:09pm
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Thank you for your reply and your suggestions unfortunately I have tried all those as well. No peripherals, no sata, no headers, even no fans since the heatsink of the cooler is enough to cool this CPU passively on idle. Tried booting with m.2 and without still no luck. Reseated CPU just in case but still, no post and the leds are on. not even using a power button just shorting the headers. Swapped vga cables for dvi, swapped all power cords from all three psu's nothing. I have a speaker that I have connected to the headers and it doesn't make any sound and this is weird, (did swap orientations just in case I am placing it wrong) but my assumption is that the default setting on the motherboard is to have it disabled. I can't check it though. So again I am at a loss. I have a weird reasoning to my head, maybe this board needs a more powerfull PSU the max wattage I have tested is 550 but this is just crazy talk of a frustrated guy. |
Posted By: MadScientist
Date Posted: 09 Nov 2020 at 9:12pm
| Could be the PSU. I would try a PSU with at least 650W. |
Posted By: kozywozy
Date Posted: 09 Nov 2020 at 10:31pm
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I will, once I get my hands on one but it is highly unlikely. I mean those specs could get away with a much less powerful psu. plus it did work for a while with no issues. If it needed more it would from the beginning. |
Posted By: Skyline
Date Posted: 18 Nov 2020 at 10:58am
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Hello, Now I have the same issue of yours. I implemented new PC by myself and the specs are; CPU: Ryzen 3 3600 Mobo: B550m Pro4 Memory: F4-3200C16D-16GIS by G.Skill 2x8GB GPU: Sapphire Pulse RX 5600XT SSD: XPG SX8200 Pro 512GB PSU: Antec NeoECO Gold NE650G I think we use the same combination of motherboard and memory. As you wrote, The first 2 days were fine and suddenly blank monitor during playing game. After that, CPU and DRAM LED are on and no post. I also did everything I can do like CMOS clear, CPU/memory/GPU re-implementation, etc. Currently I doubt the memory. Would you tell me the result of your analysis and the current status of your machine? |
Posted By: Skyline
Date Posted: 26 Nov 2020 at 4:48pm
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Hello again, Let me share the root cause of this issue. First, I doubted memory(G.skill) as I wrote in the last reply. I bought it at famous PC parts shop, so brought whole PC in the shop and tested it. G.skill memory worked well on the shop's test PC and other memory didn't worked for my PC. I asked another shop to check my CPU(Ryzen 5 3600), and finally they found it was broken. They sent me new CPU and now my PC successfully started again! |
Posted By: kozywozy
Date Posted: 07 Dec 2020 at 10:52pm
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Sorry for the late reply I was away for a bit. I am glad that you have sorted your problems. Unfortunately mine were not. I have tried CPU's that I know that were working 2 different ones to be exact but nothing. I guess it is a bios problem and needs to be flshed back and then updated to a newer one instead of the 1.20. Unfortunately ASROCK doesn't have a bios flash back system so it is going back for RMA and see what they tell me. Will update once I get any sort of reply. |
Posted By: cereal
Date Posted: 11 Dec 2020 at 7:28am
a bunch of bs. even moderately overclocked intel 10900 with 2080ti on full load won't draw more than 550w of power. With OP set up it is probably around the 200w on full load 450w PSU assuming it is close to it's true rated power would be more than enough https://www.youtube.com/watch?v=X_wtoCBahhM |
MadScientist wrote:Posted By: MadScientist
Date Posted: 12 Dec 2020 at 1:22am
I watched the video and agree. In fact I am currently using a Seasonic 500W 80+ Gold rated modular PSU on my new build, Phantom Gaming 4 MB, ryzen 5 3600 CPU, EVGA Nvidia Geforce GTX 1660 TI GPU. Works fine. A good, at least a 80+ Bronze or Silver rated, 450W/500W, PSU from a reputable company like Seasonic, Corsair, or EVGA, would be ok for the OP's system, but he is currently using an OLD Thermaltake TR2 450W PSU. Does it even have an 8 pin 12V cable for the MB, how is it splitting the voltage/wattage on the rails? The reason I suggested that if he is going to replace the TT TR2 with a new PSU to go with a slightly higher wattage PSU was if he decides later to upgrade to a newer higher wattage GPU and/or a higher wattage ryzen 5000 series CPU. |
Posted By: kozywozy
Date Posted: 12 Dec 2020 at 2:11am
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Have tried with 550w seasonic 80+ bronze, bequiet 1000 80+ platinum as well. It isn't the psu guys. It has to be a bios issue and I need a way to flash back. In the mean time it has been more than a week and no reply from Asrock about my RMA request.
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Posted By: ThreeDee
Date Posted: 12 Dec 2020 at 11:37am
Also, it would stand to reason that if it's indeed a BIOS issue, then ASRock RMA services wouldn't have been able to boot the board up..? You say it boots up when it's not at home .. maybe take your mobo and a PSU over to a buddy's house and see if it boots there?  What was their "test" CPU? .. and are you obsoletely certain they booted up your board? Do you have a local PC shop you could have them test stuff out for you? .. then if it doesn't boot for them, you can add that info to your next RMA attempt ------------- |Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15| |
Posted By: kozywozy
Date Posted: 12 Dec 2020 at 5:25pm
I have tried both with and without. I have tried to boot without RAM still both light come on, even hooked up a speaker to check on post messages if any but none.
That was what I was expecting when I send the board back to the shop where I bought it. But alas it booted up. At least the pictures they sent me showed a B550M Pro4 Motherboard BIOS (Attaching link from the picture they have sent me at the botom of this message)
Did that and it didn't. Leds come on right away exactly as in my house, even tried his ram and still no go
They used a 3100 as well and a random 8GB memory module as they said and no I cannot be certain but isn't it a bit far fetched to go into great length just to avoid a DOA?
I don't no in my area, but I gave it to a friend who builds computers and worked on a repair shop to try and test it. No luck. It just won't post at all and the leds light up immediately. If the shop hadn't send me those pictures of the motherboard booting up I think we would all agree that the motherboard is at fault and I guess it is. If they tricked me then ASRock will validate that the board is faulty if I RMA it. If they didn't trick me and somehow they managed to reseat the ram better than any of us that have tried before then I am at a loss since we really tried but I mean how difficult is it to reseat a RAM module. Keep in mind that the computer suddenly stooped while it was working fine which is another piece of the puzzle that I cannot explain. https://www.dropbox.com/s/2mst18qv4puc6qa/01.JPG?dl=0 |
Posted By: Xaltar
Date Posted: 13 Dec 2020 at 1:52am
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When you took the board to your friends to test, did he try it with another CPU? While a CPU randomly dying isn't common it is more common today than it was 10 years ago. When they do fail it is typically within a month of purchase, if they survive a month they will usually run practically forever barring insane voltage and overclocking. IMO, board or CPU being behind the issue I would RMA the CPU, just to be on the safe side. The most common fail point on CPUs is the IMC (memory controller) which would explain your symptoms. -------------
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Posted By: kozywozy
Date Posted: 13 Dec 2020 at 2:46am
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Like I wrote earlier I have tried three different CPU's and they all resulted in the same error on the mobo. A 3100, a 3950x and a 4350G to see if an Apu might do the difference. It is highly unlikely that all failed on the specific motherboard and work on the systems they were pulled from. Keep in mind that all the items on the OP work just fine to date with an MSI B550 Pro - A The memory isn't in the Asrock qvl list but it worked on first try and I have tested it with HyperX from the qvl, and still no dice. |