- Sep 25, 2012
- 1,095
- 1
- 19,465
Relevant information:
6-year old build
i5-3570k
gigabyte z77x-d3h
xfx pro 550W
known working ddr3-1600 stick
no dedicated gpu or storage installed during testing.
there was a major power surge 2 days prior to this issue, which blew out the thermostat. My desktop remained on throughout, until a manual shutdown the night before the issue.
As a dead processor or psu would cause noticeable issues during usage, my first thought is that the bios was corrupted during the power surge.
symptoms:
computer turns on, fans spin, then shuts off. Normally, the internal speaker indicates POST completion, but this does not occur.
testing process:
Within the power supply, the fan spins on under the correct conditions. The main connector tests at 3.36V(orange), 5.11V(red), 12.23(yellow), and -11.80V(blue), based on testing with a multimeter and a 1k resistor. The tested values are similar to their rated 3.3V, 5V, 12V, and -12V values, respectively, with 2% difference.
I tried installing the cpu in another 3rd-gen intel desktop (hp compaq 6300 sff). It boots normally to bios and the windows startup screen. Aside from the heat directly caused by a lack of fresh paste, there were no issues.
Conclusion:
I'm convinced that the motherboard is fried in such a way that is irrecoverable, but I thought I should get a second opinion on the testing process, as I am having an insanely bad week and am more prone to human error at the moment.
I'm considering just rebuilding the internals with warrantied parts, since my luck at the moment is approx. 80% chance of DOA.
6-year old build
i5-3570k
gigabyte z77x-d3h
xfx pro 550W
known working ddr3-1600 stick
no dedicated gpu or storage installed during testing.
there was a major power surge 2 days prior to this issue, which blew out the thermostat. My desktop remained on throughout, until a manual shutdown the night before the issue.
As a dead processor or psu would cause noticeable issues during usage, my first thought is that the bios was corrupted during the power surge.
symptoms:
computer turns on, fans spin, then shuts off. Normally, the internal speaker indicates POST completion, but this does not occur.
testing process:
Within the power supply, the fan spins on under the correct conditions. The main connector tests at 3.36V(orange), 5.11V(red), 12.23(yellow), and -11.80V(blue), based on testing with a multimeter and a 1k resistor. The tested values are similar to their rated 3.3V, 5V, 12V, and -12V values, respectively, with 2% difference.
I tried installing the cpu in another 3rd-gen intel desktop (hp compaq 6300 sff). It boots normally to bios and the windows startup screen. Aside from the heat directly caused by a lack of fresh paste, there were no issues.
Conclusion:
I'm convinced that the motherboard is fried in such a way that is irrecoverable, but I thought I should get a second opinion on the testing process, as I am having an insanely bad week and am more prone to human error at the moment.
I'm considering just rebuilding the internals with warrantied parts, since my luck at the moment is approx. 80% chance of DOA.
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