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SuperMicro H8Dg6-F not posting

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November 17, 2011 12:36:57 PM

I am at work and I have 5 Supermicro H8DG6-F motherbaords that wont POST. It has 2 Opteron 6220 CPUs. It has 128 GB of ram. These are the things I have done with no success. Tried 1 CPU, taken all the ram out (no memory post beep when I do this), rest the BIOS, taken out the battery also to clear CMOS. Tried 3 different power supplies. Tried 1 stick of ram. So far nothing. Supermicro says they have no ideas. Any help would be great.

Chaotic Law
a c 435 V Motherboard
November 17, 2011 12:55:32 PM

What is the specific ram you are using?
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November 17, 2011 1:01:37 PM

Sounds like a fried mobo, but 5 at once is a 'bit' too much of a co-incidence..

You sure both CPU's are good?
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November 17, 2011 1:05:17 PM

Kingston KVR1333D3D and Actica ACT16GHR72 1066, both are DDR3. Same response from the motherboard with ram installed or if there is no ram. No POST beep no power light. IPMI is flashing and Network lights show when a cable is plugged in.
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November 17, 2011 1:08:22 PM

Well I have to assume that all 10 CPUs are good as non of the boards are POSTing.
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November 17, 2011 1:08:36 PM

Well I have to assume that all 10 CPUs are good as non of the boards are POSTing.
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a c 435 V Motherboard
November 17, 2011 1:14:49 PM

You may need to flash the bios or check the cmos jumper. Maybe it's in the "open" position. Try moving it over, keeping two of the three pins covered.
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November 17, 2011 1:22:00 PM

The board does not have a CMOS jumper, it just has 2 solder points which we have used many times. No success. Nice suggestion though.
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November 17, 2011 9:40:34 PM

Chaoticlaw said:
I am at work and I have 5 Supermicro H8DG6-F motherbaords that wont POST. It has 2 Opteron 6220 CPUs. It has 128 GB of ram. These are the things I have done with no success. Tried 1 CPU, taken all the ram out (no memory post beep when I do this), rest the BIOS, taken out the battery also to clear CMOS. Tried 3 different power supplies. Tried 1 stick of ram. So far nothing. Supermicro says they have no ideas. Any help would be great.

Chaotic Law


Do you have any 6100 series CPU's laying around to test? My thought is that the board's are not flashed with the latest bios that supports 6200 series.
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