Gigabyte MZ31-AR0 model with revision 1.0 server motherboard encountered POST failure during startup.

F5F Stay Refreshed Hardware Desktop Gigabyte MZ31-AR0 model with revision 1.0 server motherboard encountered POST failure during startup.

Gigabyte MZ31-AR0 model with revision 1.0 server motherboard encountered POST failure during startup.

Gigabyte MZ31-AR0 model with revision 1.0 server motherboard encountered POST failure during startup.

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Minemanhpminer
Member

193

07-29-2025, 05:53 AM

#1

Good morning, I'm looking for assistance with updating the GB-MZ31-AR0 rev. 1.0 mobo. The BIOS and BMC firmware are up to date. Hardware is QVL approved and the EPYC 7551 is functioning well in my AZRock ROMED8-2T. Right now, the board only supports BMC/IPMI, lacks POST and power to other components, no fan activation, and only the BMC LEDs and LAN are visible. I've tried standard fixes like clearing CMOS, re-flashing BIOS/BCM, and installing minimal hardware with a single DIMM populated (A1). The CMOS battery was dead, but after replacing it and repeating the steps, nothing changed. One possible problem is the MB_CPLD firmware displaying NA, which might be linked to the dead CMOS. Since then, no POST occurs. I can update the CPLD, but Gigabyte doesn't offer the required *.rcu files in their support downloads. Anyone have suggestions?

M

Minemanhpminer

07-29-2025, 05:53 AM #1

Good morning, I'm looking for assistance with updating the GB-MZ31-AR0 rev. 1.0 mobo. The BIOS and BMC firmware are up to date. Hardware is QVL approved and the EPYC 7551 is functioning well in my AZRock ROMED8-2T. Right now, the board only supports BMC/IPMI, lacks POST and power to other components, no fan activation, and only the BMC LEDs and LAN are visible. I've tried standard fixes like clearing CMOS, re-flashing BIOS/BCM, and installing minimal hardware with a single DIMM populated (A1). The CMOS battery was dead, but after replacing it and repeating the steps, nothing changed. One possible problem is the MB_CPLD firmware displaying NA, which might be linked to the dead CMOS. Since then, no POST occurs. I can update the CPLD, but Gigabyte doesn't offer the required *.rcu files in their support downloads. Anyone have suggestions?