Power Supply Repetitive Clicking Sound

[ObaidWorld8393]

Hey Hp Community,

Recently One Month Ago I Bought Hp Z420 With E5-1620 0 Processor 

My pc was working fine till yesterday.Yesterday i Hear a werid soung some repetitive clicking sound from Psu(600w Build in) And Pc Not Turnjng On.After Few more tries finally it opens and i check four to five times again for confirming and it was all right.Now Today Whn i turn on My pc i hear same rwpitive cling sound from psu and power button and mother light blinking four times with no beep.I have tried all things reseting, disconnecting and then reconnecting but nothing work for me.After Two times clicking sound gone and i turn on again no sound after no psu fan coller or heatsink fan not working but four times red light blinking with no beep i just disconnect motherborad power and turn on again it make agin clicking sound.Pleasee help me this is my new computer which i bought recently 

[Prométhée]

hi

Return to seller
obviously problem with power supply
read the document here

 HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide

Red Power LED blinks four times, once every second, followed by a two-second pause.

Four beeps.
Power failure (powersupply is overloaded).

CAUTION: Internal components might be powered even when the computer is off. To prevent damage, disconnect the
computer power cord before you remove a component.
1. Open the access panel and ensure that all power connections are secure on the system board.
2. Check if a device is causing the problem by removing all attached devices (such as hard, diskette, or optical disk
drives, and expansion cards.) Power on the computer.

If the system enters the POST, power off and replace one device at a time; repeat this procedure until failure occurs. Replace the device that is causing the failure.

Continue adding devices one at a time to ensure all devices are functioning properly.

[ObaidWorld8393]

Pls Tell Me i bought a new used pc condition 10/10 all thing ok then why suddenly it behaves like this .One strange i noticed also that before one day there ie sparking or tackling noise from psu causing red ligt blinking like spark on power butoon i immediately turn off my pc and after few second turned on but it was ok and its starts normally i think it might be some issue for a time but after one day it becomes completely dead.i will go to suppleir and demand for replacement but one thing i want to make sure that i can rdb keyboard which was broken i take out it light and connect wire with usb cabel and connect it to my pc after that problem causes pls tell me is this the reason or it might be coincidence

Thanks Regards: Obaid ur rehman 

[Prométhée]

sorry i don't understand everything you say
but a breakdown happens anytime, and with a second-hand computer the risk is greater