this post was submitted on 18 Mar 2024
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Buildapc

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Hi

I have a small headless PC that's been running as a server for some time. Specs below

Component Details Details
Motherboard AsRock B450 Gaming-ITX/ac https://www.asrock.com/mb/amd/fatal1ty%20b450%20gaming-itxac/index.asp
RAM 2 x Samsung M391A2K43BB1-CTD https://semiconductor.samsung.com/dram/module/ecc-udimm-ecc-sodimm/m391a2k43bb1-ctd/
GPU MSI GeForce GT 730 2 GB https://www.msi.com/Graphics-Card/N730-2GD3V2/Specification
Case Fractal Node 304 https://www.fractal-design.com/products/cases/node/node-304/white/
Boot SSD Kingston A2000 250 GB, M.2 2280 https://www.kingston.com/datasheets/A2000M_prelim_us.pdf
PSU Seasonic Focus GX 550 W https://seasonic.com/focus-gx

I purchased a Ryzen 5 4560G CPU, as they have an integrated GPU and work with ECC RAM, so that I can free up my GPU for other tasks.

Unfortunately, after replacing the CPU the build fails to boot:

  • all fans spin up
  • no video signal (tried both iGPU and dGPU )
  • restarts after 20-30 seconds

I did two attempts to install the CPU, after the first one I realised that I forgot to upgrade the BIOS to at least version 4.40 ( https://www.asrock.com/mb/amd/fatal1ty%20b450%20gaming-itxac/index.asp#CPU ) , I was running 3.X . I reinstalled the old CPU, upgraded the BIOS to version 4.60 and installed the new CPU again. This failed again.

I am now runing with the old CPU, but I am out of ideas about what to try, assuming the new CPU is working as expected.

Does anyone have any suggestions I can try? I did not try to randomly reseat things as the build is pretty cramped.

Thanks!


Update: I managed to get this to work successfully. I reset the BIOS to defaults (did not short pin, just used the UEFI interface ) and reseated the RAM again (although I am not sure that did anything, never had problems with the RAM ).

One interesting tidbit is that the first time I booted I was greeted by a POST message along the lines of

New CPU installed, fTPT/PSP NV corrupted or fTPT/PSP BV structure changed

Press Y to reset fTPM, if you have BitLocker or encryption enabled, the system will not boot without a recovery key

Press N to keep previous fTPM record and continue system boot, fTPM will NOT enable in new CPY, you can swap back to the old CPY to recover TPM related Keys and data.

I pressed Y and I was able to boot with the new CPU. Something that is still not working is switching the boot GPU to the integrated one, but I'll keep digging. Thanks for all the help!

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[–] satanmat@lemmy.world 1 points 8 months ago (1 children)

Oof. I think the first thing I’d check is the new cpu.

Or. Pull the gpu (booting the new CPU) to verify there is no compatibility issue?

[–] rombert@lemmy.world 2 points 8 months ago

I tried to boot without the new GPU as I had to remove it to properly install the CPU cooler (stock AMD, I found it a pain). That did not help.

I already opened a warranty case regarding the CPU, I wanted to check if I was missing something.