#New built PC stuck on code 4d at post after an hour or so of use

1 messages · Page 1 of 1 (latest)

slender arch
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built a new system and I'm getting the strangest set of issues
R7 9850x3d
XPG Blade 2x16gb 8000cl38 ram
Gigabyte X870 Aorus Stealth Ice
Powercolor 9070xt Hellhound
Deepcool PQ850g psu
Boot drive is on a teamforce G70 Pro
After using the PC for a few hours, on next boot it will get stuck on post code 4d with a DRAM light. Clearing CMOS, reseating ram or running single stick ram (either stick) does not resolve the code.
Pulling the gpu out or reseating the CPU fixes the code and allows the system to post. If the GPU is left in the issue reoccurs after further use, I have been unable to replicate the issue with no gpu inserted.
The GPU is known good and working since I've been using it on my old AM4 pc for the last few months.
The board is a new board that I just got replaced, I returned a previous identical SKU of the board since I was experiencing the same issues but the new board also has the same issues and symptoms.
The RAM passed memtest at 8000cl38 on this system, and passed memtest on an independent test bench at 6000cl32 running on a 7600x and a B650 board. The issue with my build occurs regardless of xmp or speed settings (xmp on, xmp on with 6000cl30 and cl32 and cl34, manually adjusting voltage from 1.4 to 1.3, and xmp off at base JEDEC speeds).
The system is 100% stable after post, ran prime95 and furmark for 50 minutes with no errors at xmp speeds.
My current working theory is that the CPU IO die is defective, and I have access to a second set of ram to test tomorrow. If that set also experiences the same issue I'm going to also return the cpu

Anybody got any ideas?

IMG_1340.jpg
noble lotus
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It’s a ram code

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Downclock your ram 8000 is extremely unstable on am5 right now

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It could boot once perfect and the next time fail to train

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Use 6400 tbh, you’ll see very little benefit productivity and performance loss in gaming above this

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The other option is it’s just bad ram

slender arch
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unless both kits are fucked somehow

amber knot
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and case if u dont mind

slender arch
slender arch
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it's not the cpu
It's not the board
It's not the ram
the GPU was literally working in the last system (5800x3d + b450 board) for the last two months

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what the fuck else can it be

amber knot
noble lotus
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2 dead ram unlikely

slender arch
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already replaced cpu and board

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2 sets of cpu, board, ram

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same symptoms

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I contacted gigabyte support

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waiting on them to get back cos this is genuinely the most perplexing issue I've ever seen

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I suspect it's some sort of bios bug with the new cpu

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Because beyond that there simply isn't many other options

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Either that or I somehow got two dud components in a row

slender arch
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ok I'm borrowing another gpu to test and I've been unable to replicate the problem so far

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I'm running more stress testing rn but if it's the gpu then

  1. this is the strangest manifestation of a gpu issue I've ever seen
  2. the most unlucky coincidence ever considering there's no physical damage on the old card during the swap
high prawn
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could possible that you motherboard not recognizing the RAM Chips. ?

slender arch
slender arch
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I think it has to be a bug with the bios and my specific hardware configuration

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There is literally no other variable possible unless I got two bad components through two warranty replacements

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and both bad components have the exact same defect

noble lotus
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It’s a weird one pal

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One of the best motherboards and cpu configs that many use

slender arch
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it is a very weird one

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It's also that my pc doesn't have drivers for the other gpu

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I just ddu'd my drivers and reinstalled

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gonna see if that fixes it

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if it actually is the gpu drivers then it is probably the single weirdest manifestation of driver issues I've ever seen

slender arch
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ddu'd drivers
still happens