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 b450 gaming-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 b450 gaming-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!