This configuration fails to power up on the Supermicro X8DTN+-F model.
This configuration fails to power up on the Supermicro X8DTN+-F model.
I encountered an unusual issue. I purchased a Supermicro motherboard (X8DTN+) for my NAS with dual Xeon X5670 processors and 12x2GB ECC RAM from Samsung/Hynix at 1333MHz, pre-installed. Before powering it on, I applied fresh thermal paste and checked the connectors for any damage. After swapping the CPUs and reapplying thermal paste, the system started up normally. I also got a 6x4GB Nanya 1333MHz ECC RAM which functioned correctly. A month later, I bought another Supermicro board (X8DTN+-F) with dual Xeon E5620 CPUs and 18x4GB ECC RAM from Hynix at the same speed. Again, I refreshed the paste and reinserted the CPUs, which booted fine.
The strange part began when I tried to change the CPUs back to the X5670 configuration. The machine wouldn’t start. When I pressed the power button, the fans started but nothing happened afterward—no display, no sounds, no signals. After swapping the CPUs again, it also failed to boot. No output from any device.
I then experimented with various setups on the X8DTN+-F: different CPU arrangements in different slots, all with any RAM, none worked. I tested everything using only the motherboard and RAM, connected via USB keyboard and mouse, which operated normally during startup. I also tried running each configuration with just one CPU and with both 1200W power supplies. The system is installed on a Supermicro SC745TQ-R1200B.
I’m completely confused and frustrated. Any advice would be greatly appreciated.
I've attempted to update the BIOS as recommended by TheCakeIsNaOH on the level1techs forum. Unfortunately, it didn't resolve the issue—the system remains locked with fans at full speed, showing no display or error sounds.