F5F Stay Refreshed Hardware Desktop SuperMicro H12DSi-N6 paired with Dual EPYC 7B13s fails to power on once placed in a case.

SuperMicro H12DSi-N6 paired with Dual EPYC 7B13s fails to power on once placed in a case.

SuperMicro H12DSi-N6 paired with Dual EPYC 7B13s fails to power on once placed in a case.

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saukeuchiuchi
Senior Member
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621
02-17-2025, 05:21 AM
#1
I had operated this setup for over six months in an open setting and chose to enclose it for better performance. I upgraded my primary PC's enclosure to the Corsair 7000D Airflow model. Previously, the system used four 140mm fans, one 120mm fan aimed at the VRMs with a 3D-printed duct, and the CPU coolers (Arctic 4U SP3s). I supplemented this setup with three additional 140mm fans and four 120mm fans (two of which are not PWM; I attempted to remove them without success due to compatibility concerns). To power the extra fans, I connect them via the case's internal header, which links directly to the FAN2 header on the motherboard and a SATA power cable. All fans are routed through FAN1 to FAN6 headers, while FANA and FANB remain unplugged. I also replaced my PSU from the NZXT C1000 (80+ Gold) with a Be Quiet! Straight Power Platinum 1200 (80+ Platinum) since the NZXT cable couldn't reach the PSU due to the large motherboard. NOTE: I’m using CPU cables from a Quiet! Straight Power Gold 1000 (80+ Gold) as the Platinum box with cables isn’t available. I’ve contacted BeQuiet! support to verify cable compatibility despite being from the same brand. I can access the IPMI dashboard and see some LEDs lighting up, but I’m uncertain if the board is actually receiving power. When attempting to transmit the Power On signal from the dashboard, nothing occurs, even though the fans spin immediately after power is applied. Auto-boot was already enabled. I’m genuinely concerned about the hardware. As a non-expert, any guidance would be invaluable. Steps I’ve tried: removed the CMOS battery for a couple minutes and restarted; reset BIOS via IPMI; cleared BMC settings; updated BIOS from 2.6 to 2.9 (IPMI still shows 2.6 post-update); unplugged the two non-PWM 120 fans.
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S
saukeuchiuchi
02-17-2025, 05:21 AM #1

I had operated this setup for over six months in an open setting and chose to enclose it for better performance. I upgraded my primary PC's enclosure to the Corsair 7000D Airflow model. Previously, the system used four 140mm fans, one 120mm fan aimed at the VRMs with a 3D-printed duct, and the CPU coolers (Arctic 4U SP3s). I supplemented this setup with three additional 140mm fans and four 120mm fans (two of which are not PWM; I attempted to remove them without success due to compatibility concerns). To power the extra fans, I connect them via the case's internal header, which links directly to the FAN2 header on the motherboard and a SATA power cable. All fans are routed through FAN1 to FAN6 headers, while FANA and FANB remain unplugged. I also replaced my PSU from the NZXT C1000 (80+ Gold) with a Be Quiet! Straight Power Platinum 1200 (80+ Platinum) since the NZXT cable couldn't reach the PSU due to the large motherboard. NOTE: I’m using CPU cables from a Quiet! Straight Power Gold 1000 (80+ Gold) as the Platinum box with cables isn’t available. I’ve contacted BeQuiet! support to verify cable compatibility despite being from the same brand. I can access the IPMI dashboard and see some LEDs lighting up, but I’m uncertain if the board is actually receiving power. When attempting to transmit the Power On signal from the dashboard, nothing occurs, even though the fans spin immediately after power is applied. Auto-boot was already enabled. I’m genuinely concerned about the hardware. As a non-expert, any guidance would be invaluable. Steps I’ve tried: removed the CMOS battery for a couple minutes and restarted; reset BIOS via IPMI; cleared BMC settings; updated BIOS from 2.6 to 2.9 (IPMI still shows 2.6 post-update); unplugged the two non-PWM 120 fans.

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lizzard89
Senior Member
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707
02-17-2025, 05:21 AM
#2
Have you verified the stand-offs are correctly positioned? I’m not very familiar with server configurations, so it’s a bit uncertain... It seems like the system might be failing to boot, possibly due to an incorrect boot drive location. Have you confirmed that all drives are placed in the same relative area?
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lizzard89
02-17-2025, 05:21 AM #2

Have you verified the stand-offs are correctly positioned? I’m not very familiar with server configurations, so it’s a bit uncertain... It seems like the system might be failing to boot, possibly due to an incorrect boot drive location. Have you confirmed that all drives are placed in the same relative area?

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