Pavillion desk top does not start. Lamp on the power cable is green - not plugged in & blinking in

[Shishy]

Pavillion desk top does not start. Lamp on the power cable is green - not plugged in & blinking - plugged in. 15 sec reset with the power cable unplugged didn't help.

[Kumar0307]

Hi @Shishy

Welcome to the HP Support Community. I'd be happy to assist you.

Do you see any light on the tower of the PC or the power button?

Is the display completely blank and dark?

For now, power reset the PC

1) Shutdown the computer. 
2) Unplug all the Adapter and peripherals connected. 
3) Press and hold down the power button for 15 to 20 seconds. 
4) Plug-in the Adapter. 
5) Try to turn on the computer. 

Let me know how this goes.

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

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Have a great day! 

[Giu154]

Yes I unplugged,press start button for 1 minutes,tried again and nothing?

[Hibb1]

So it's a Tower unit? Is the green light situated on the BACK of the power supply?
Does the PSU have a black test button?

So if you plug the power cord into the PSU, then the light goes green, and you press the power button, nothing happens? Is that correct?

[Giu154]

Yes its a tower unit it has a green light on the back when it’s plugged it has no power button on the back.It has in the front bottom ,I press it an d nothing happens,when I plug the monitor on turn it on it displays no signal,I plug the key pads  To the tower and  Has no power ?

[Hibb1]

Well there's a slim chance the PSU has failed, or more likely, the mainboard has failed. Is the unit still under any kind of warranty?