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HP Z420 Doesn't boot and fans run at max speed
12-03-2019 02:35 AM

This morning when I tried to boot my Workstation it failed to boot. I think it's related to RAM modules, but it can be also related to the motherboard. Already tried to use a Ram per boot, butt same problem, also with working RAMs from other Workstations.
12-03-2019 07:02 AM

Hi MattialIT,
Yes, power supply, RAM, or MB, or component connected to the MB.
Just repaired a system with a similar symptom (no POST/fans on high).
The pump on the CPU AIO liquid cooler had failed.
Try a bare bones config (try a different PSU if possible) then work you way down to the MB.
Regards
12-28-2019 07:58 AM

@Grzwacz wrote:Hi MattialIT,
Yes, power supply, RAM, or MB, or component connected to the MB.
Just repaired a system with a similar symptom (no POST/fans on high).
The pump on the CPU AIO liquid cooler had failed.
Try a bare bones config (try a different PSU if possible) then work you way down to the MB.
Regards
hi,
i have same problem. i just switch video card from another identic workstation, i buy new ram but hp z420 doesn t start and power supply fun go at the max speed. Can help me?
regards
Alessio

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