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I have a problem with a Dell Precision 7920. When I press the power button to turn it on, the power supply will turn on but after a while it will immediately turn off again, if I repeat it it will still be the same.
I have checked the power supply but there is no problem with the hardware, and the indicator light remains green.
I have removed the RAM and processor but it remains the same, what should I do to solve this problem?
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Posted June 13th, 2024 15:12
Do you have any addon cards installed ? ( aside the gpu I mean )
Did you try with just 1 dimm ? (it's likely that the mb itself has an issue)
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Posted June 14th, 2024 02:56
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Posted June 14th, 2024 06:23
@bradthetechnut I have tried to replace the CMOS battery with a new one, but it still doesn't work.
The problem with my Precision 7920 is that when I turn it on, the power supply will turn on and then immediately turn off again(edited)
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Posted June 14th, 2024 06:25
@mazzinia_ i have a gpu installed on my dell precision 7920, i have removed it and the memory too but it still doesn't work
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Posted June 15th, 2024 02:17
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Posted July 17th, 2024 04:29
Dear @mazzinia_
i've replace motherboard with the new one, and then my precision running for normally, and i've replace the power supply too.
Thanks for you're attention and answering my questions for my trouble with Dell Precision 7920.
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Posted July 17th, 2024 04:31
Dear @bradthetechnut,
Thanks for your attention and answering my questions, now my dell precision 7920 running for normally, i just replace the old motherboard with the new one. Big thanks for you bro.
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Posted July 18th, 2024 02:59
You're welcome and glad you got it working. @mazzinia_ was the biggest help in this case.
mazzinia_
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Posted June 14th, 2024 16:12
Well, 99% you need a new motherboard. The Pfault message can be referred to various things ( can be caused by an addon card that has issues or with a corrupted firmware, or by issues with the memory channels on the board, by example ) but in your case the System board is mentioned explicitly, so it's likely that the board simply has an issue and you need a new one.
You could try to reset the cmos , but personally i think it's one of two cases : case 1 - the chip that monitors the voltages has issues (but the power distribution circuit on the motherboard has instead no issues) and turns off the system to prevent damages (wrongly) or case 2 - the chip that monitors the voltages works correctly and the power distribution circuit on the motherboard has developed a fault, thus it tells the psu to turn off to prevent damage to the cpu/ram/cards.
In a way seems similar to the issue I had with a silicon graphics Fuel ... there was a batch if i2c chips programmed to monitor the system, that went bad over time ( defective batch ), and prevented the psu to turn on the system due to wrong voltages being registered