Have you damaged your motherboard?
Have you damaged your motherboard?
You've got a MSI450M gaming plus with the 5800X3D chipset. You tried using the BIOS flash button on the back with the updated BIOS via USB, but it only shows the EzDebug CPU after about 12 minutes. The issue is that you can't access the BIOS when the PC is powered on and you're clearing files. Also, inserting your old 2700X doesn't restore BIOS access. It seems like a major problem—maybe you need to replace the motherboard or check for deeper hardware issues.
Using the BIOS flashback feature might help you here. Get the appropriate BIOS for your board (make sure it matches, double-check: https://download.msi.com/bos_exe/mb/7B87v1H1.zip). Unpack E7B87AMS.1H1 and rename it to "MSI.ROM". Place it on a FAT32 formatted flash drive at the root. Retry the flashing process. Detailed steps are on page 20 of the manual (https://download.msi.com/archive/mnu_exe...87v1.2.pdf)
I performed the action, it restarts once. Ezdebug directs to RAM rather than CPU, after which it powers down
Are you attempting to flash with the device powered down or active? It seems the debug lights shouldn’t light up unless the system is off, which aligns with normal operation. Which USB drive are you connecting?
Edit: I just revised my notes above, but did you copy the BIOS file or rename the archive? That matters because it affects whether I proceed correctly.
Sorry for the delay. I managed to get it running, but there were several issues. First, I didn’t convert the file into a ROM properly and altered the wrong section. Second, I tried it with the new CPU instead of the old one; the BIOS on my motherboard was outdated, so the new CPU didn’t work. Third, I followed advice from a friend who suggested skipping the CPU cooler during flashing, thinking it would prevent overheating quickly. That was incorrect and likely caused the process to fail.
Great to know it was just a minor error. It shouldn’t have caused any problems. If you were accessing the BIOS directly, you’d need a compatible CPU. However, this highlights the advantage of motherboards with a BIOS flash button—you don’t require a specific CPU or even a physical chip installed!