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G5 5000 Power Rail Failure -- is that system board or PSU?
Dell G5 5000
Subject pretty much says it all. My G5 5000 gaming model will not boot, POST code 3 flashes orange, 5 flashes white indicating "Power Rail Failure: EC ran into power sequencing failure"
I think this is probably a system board issue, but could it be a PSU issue? I tried to reset the bios by removing bios battery, and also tested power-up with graphics card pulled with same results.
Any ideas?
redxps630
7 Technologist
7 Technologist
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10.2K Posts
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May 28th, 2023 20:00
This test result seems to say psu is working.
redxps630
7 Technologist
7 Technologist
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10.2K Posts
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May 28th, 2023 15:00
Can you try BIST of G5 psu?
I would not read too much into error description. basically no POST comes down to either bad board (software or hardware failure) or bad power supply.
Steve60513
3 Posts
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May 28th, 2023 16:00
No BIST button on this supply. When I plug in the power cable, green light on PSU lights up for approx 30 seconds before POST flash code starts and system powers off (green PSU light off). Then the cycle repeats.
The CPU, Case, and PSU fans are running but at low speed.
Steve60513
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May 28th, 2023 23:00
Thanks. I've started shopping for a new PC.