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04-13-2022 11:43 PM - edited 04-13-2022 11:45 PM
Dear All,
Workstation turn on and off immediately, no beep sound, just PSU and CPU fan runs for few seconds and stops, replaced power supply unit, but issue is not resolved.
Regards,
Chikkam.
04-14-2022 12:15 AM - edited 04-14-2022 12:17 AM
go to the HP site for the z440 download the service manual.............READ doing so will allow you to use the HP troubleshooting steps hp wrote
the symptoms you describe sound like a power short or possibly a bad motherboard, remove all cards ram except for vid card and just one ram stick (in proper slot)
https://support.hp.com/us-en/product/hp-z440-workstation/6978828/manuals
https://support.hp.com/us-en/product/hp-z440-workstation/6978828/troubleshooting
https://support.hp.com/my-en/product/hp-z440-workstation/6978828/model/6978830/troubleshooting