HP Z420 Doesn't boot and fans run at max speed

[MattiaIT]

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.

[Grzwacz]

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

[alexdrastico]

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@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

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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