Computer Won’t Start. Power on Button Light Flashing

[makis350]

My computer won’t start and you can see the computer power button flashing.One minute they are fine, and the next thing you know it is basically dead. You can see the computer Power button light blinking but nothing comes up on the screen.

it seems a bit slow and quiet you can almost guarantee that there is not enough power getting through.

[CF4]

Hi

Is the ESC function at power on working?

Can you run an F2 Diagnostic?

Have you any  Reovery Media made?

[makis350]

Hi,

I can't do nothing because the power come and goes in 1 sec.

I can hear only the fan trying to spin and nothing else..

the power adapter is ok

[CF4]

Hi

1st Please try a Hard Reset
This is valid for most notebooks, and some desktops.
Press and Hold the PWR off button for 4 seconds to force a PWR off.
Unplug from the wall.
IF you see a battery compartment door, then your computer has a removable battery.

IF NOT then you do not have a removable battery.

Remove any removable battery.
Press and hold the power button for 15 seconds to complete the reset.

(Re-insert any battery you removed).

"You can see the computer Power button light blinking but nothing comes up on the screen."

https://support.hp.com/us-en/document/c02222922

https://hpipg.wordpress.com/2013/09/24/blank-screen-led-error-codes/

Maybe the flashes will match and tell you what piese of hardware is suspect, like the RAM or HDD or BIOS.

[makis350]

Hi, Thank you for your help !!!

I pressed the power button for 30 seconds but the pc is not goes off... The power button keep flashing.
I have changed the RAM slot but nothing happens..
The last think I did before that happen, I was installing a game and when the installation finish the pc went of.

[CF4]

Hi

Could you please expand on the

MAKE, MODEL, OS and SKU?

Tell us what you can please. 

How many times does the power button flash?

Is it a regular sequence?

[makis350]

HP Pavilion 

Model : 15-P205NV

SKU: LOD73EA

OS: Windows 10

The power button flashing non-stop... It stops only when I remove the battery.

the pc goes on and off in less than one second .it goes completely off only when I remove the battery.

[CF4]

Hi

HP Pavilion Notebook - 15-p205nv (Touch) (ENERGY STAR)

So with battery removed.

What now happens when you press the power on button?

[makis350]

The same think happens

[CF4]

Hi

I cannot help any further.

Perhaps start a new thread?