AM5 Motherboard red dram and cpu light after restart and no boot. Cold boot is normal.

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Chirohito

Chirohito

PCHF Member
Aug 6, 2024
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Greetings from Croatia friends! I have ryzen 7 7800x3d, Asrock b650 pro rs motherboard and KINGSTON Fury Beast RGB KF564C32BBAK2-32 ram (QVL for my motherboard), Arctic freezer 34 esports duo cooler, gpu Asrock rx 7800xt phantom gaming, windows 11 pro and the latest bios. I have 3 nvme ssd, two samsung 980 pro 1 tb and samsung 970 evo plus. New Antec vp600 plus psu. Pc is connected to Samsung q95t 65 inch tv with hdmi 2.1. I tried another power supply and it's the same so i know it's not the PSU. Cpu pins are ok but i know that it could be faulty cpu memory controller. If i don't turn on the XMP profile it reboots normally. I tried different RAM and the same thing happened so i think it's not the RAM either. Could it be cpu memory controller or bad motherboard capacitor that regulates boot up voltage. Should i wait for the new bios maybe? Does anybody have any idea? Thanks!
 
Is this a new development or has this been happening for ages, even since day 1?
The RX7800XT recommends a 750w PSU by the way.
Add to that, the Antec VP+ range are basically crap, especially in a gaming rig. See here; https://cultists.network/140/psu-tier-list/
It is rated Tier E - Avoid.
So I wouldn't be ruling out the PSU not being either part of the issue, or cause of it.
What were the specs of the other PSU you tried.

I assume you have 2x16GB sticks of memory and have them in slots A2 and B2?
 
Well i can't say it's a new development, it happened before a few times but rarely. I can't remember if it started to get much worse when i updated to the last bios but i think that's the case. Yeah i know the Antec is crap but it's new and the other PSU that i tried is a 500w Corsair. The cold boot is normal, the only problem is when i restart the pc. Memory is installed in A2 and B2 and i think that memory is not the problem. I plan to wait for this new bios that should drop any day now and then i will try with a new motherboard and cpu will be the last step.
 
Chirohito said:
! I have ryzen 7 7800x3d, Asrock b650 pro rs motherboard and KINGSTON Fury Beast RGB KF564C32BBAK2-32 ram (QVL for my motherboard),. If i don't turn on the XMP profile it reboots normally. I tried different RAM and the same thing happened so i think it's not the RAM either.
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Your Kingston RAM info KF564C32BBAK2-32 here tells us that its tested speed is 6400MT/s.

The RAM is not appropriate for your CPU, AMD state here up to 5200MHz/MT/s for DDR5 and if you have EXPO/XMP enabled the RAM will get auto OCd past what the CPU can handle and the PC will become unstable, the machine being stable when the RAM is not being overclocked goes along way to supporting this explanation.

What speed was the alternative RAM that you tried.
 
I run it at 6000Mhz/CL30, there should not be a problem at that speed. How come it gradually started to get worse, that's the part that i don't understand.
 
Sorry but I have lost count the amount of computers that I have either built or repaired and when it comes to troubleshooting the first thing that you do is knock off any overclocking, just like using a weak PSU that may initially work with an add on GPU the GPU will eventually die and likewise using too fast a speed of RAM may work for so long and then out of nowhere it will start causing you grief.

Did you check the AMD information at the link I provided, it is AMD that is telling you that you should not use DDR5 RAM any faster than 5200MT/s

Something to keep in mind, a CPU must be compatible with a MB whereas the RAM has to be compatible with both the CPU and the MB, this because a MB can be compatible with faster CPUs than the one in your list of parts and MB manufacturers often state RAM speeds that far exceed that which any compatible CPU can handle, this is misleading at the least or dishonest at worst.

Short version, it doesn`t matter what your MB manual says it is AMD or Intel that you need to check with when making sure that you don`t waste time and money on RAM that is too fast for your CPU to handle.

How do they get away with it, the max RAM speed is the tested speed and it is up to the purchaser of the RAM to make sure that their CPU can handle the maximum tested speed which in your case would be 5200MHz when XMP is enabled and not the 6400MHz that you purchased.

Edit to add: You have not told us what the speed of the other RAM was.
 
First, thx for everything friend, i also used 6400mhz Corsair vengeance rgb cl32. I hear what you are saying but i just can't understand how can everything work fine and then suddenly get much worse and start to cause problems. That's why i think it's the bios. I also read on the forums that people have no problem running 7800x3d with 6000mhz ram or even higher depending on the timings, even if the ram is not QVL. I think it's smart for me to wait for the new bios and see if things get better.
 
As I mentioned I have been doing this stuff for years and have seen the problem so many times, the CPU in particular but also other hardware weaken with age and use and if they are subjected to demands that they are not intended to be at some point one or more components start to grumble and that is what you are seeing now.

To reiterate, because the PC is stable when the RAM is not maxed out 100% supports that which you were advised and the fact that the RAM that was swapped in was also too fast for the CPU likewise 100% supports that which you were advised.

Chirohito said:
s. That's why i think it's the bios. I also read on the forums that people have no problem running 7800x3d with 6000mhz ram or even higher depending on the timings, even if the ram is not QVL. I think it's smart for me to wait for the new bios and see if things get better.
Click to expand...

Trust me or not, it is zero to do with the BIOS, MB manufacturers release BIOS updates to fix bugs in their own boards or to allow newer CPUs that may be compatible with faster RAM to be fitted, neither have anything to do with the speed of RAM that an existing CPU can handle + as already advised it is AMD or Intel that dictate the maximum speed of RAM that their CPUs can handle, not MB manufacturers.

The only way to change a CPUs behaviour is to manually OC it which unless you have a bottomless money pit I strongly advise against doing.

You are welcome btw 🙂
 
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You visited the forum but we've not heard back from you Chirohito, an update would be appreciated.
 
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😎I'm back! Here's an update: i was right, the problem started when i updated the bios. Last two bios versions are the same, memory unstable after pc restart, after exiting bios etc. Last bios when everything was working fine is 2.10 for my Asrock B650 Pro RS. I was looking the forums, reddit for people that have similar problems and they are all saying the same, after upgrading from bios 2.10 the things started to go south. For now i will wait for a fix and if they don't do it i will probably buy another motherboard. Thnx for all the help, seems like AM5 has a lot of problems still, greetings from Croatia friends!
 
Sorry but you are in denial for some reason, you get some genuine informative information from Reddit but unfortunately 90% of it is garbage, why are you prepared to accept nonsense from strangers on a non tech support related forum but at the same time reject the guidance from the very people that manufactured your processor, it really makes no sense.

You have had more than a thorough explanation as to what is wrong and the evidence has been backed up by AMD clearly stating that 5200MHz/MT/s is the maximum speed of RAM that their 7800X3D can handle.

I stand by all of the advice and explanations that you have been afforded and especially that in my reply #8 but there is no point in the thread being left open when you would rather listen to others that offer nothing constructive only fiction instead of proven fact.

phillpower2 said:
As I mentioned I have been doing this stuff for years and have seen the problem so many times, the CPU in particular but also other hardware weaken with age and use and if they are subjected to demands that they are not intended to be at some point one or more components start to grumble and that is what you are seeing now.

To reiterate, because the PC is stable when the RAM is not maxed out 100% supports that which you were advised and the fact that the RAM that was swapped in was also too fast for the CPU likewise 100% supports that which you were advised.



Trust me or not, it is zero to do with the BIOS, MB manufacturers release BIOS updates to fix bugs in their own boards or to allow newer CPUs that may be compatible with faster RAM to be fitted, neither have anything to do with the speed of RAM that an existing CPU can handle + as already advised it is AMD or Intel that dictate the maximum speed of RAM that their CPUs can handle, not MB manufacturers.

The only way to change a CPUs behaviour is to manually OC it which unless you have a bottomless money pit I strongly advise against doing.

You are welcome btw 🙂
Click to expand...
 
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