Dell E6420 XFR Rugged starts to boot but after 3 secs shuts down.

Shobos

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Join Date: Nov 2024

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Country: Latvia
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Dell E6420 XFR Rugged starts to boot but after 3 secs shuts down.

07-29-2025, 03:53 PM

Hi, I bought 6420 XFR that tries to boot but shuts down after about 3 seconds, CPU gets warm, fan starts.
So far I have tested all rails wich are good, BIOS flashed with CH341, 3.3,5, main rail present. multiple ram sticks tested. Sometimes it might stay on for longer like 4-5 seconds but not always, theres no picture whatsoever. Also on some rare occasions the caps lock flashes 1 time by itself.
NOTE: I am using bench power supply not dell charger with ID pin and NO battery present, kinda doubtful this would cause this issue.
Any help is welcome. Thanks !

Last edited by Shobos; 07-29-2025, 04:02 PM.
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Dell E6420 XFR Rugged starts to boot but after 3 secs shuts down.

Dell E6420 XFR Rugged starts to boot but after 3 secs shuts down.

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