Shutdown after 2-3 seconds after startup

[Cool-Z77]

Hi, i have the same problem with an HP G50 laptop. 

I opened the laptop and check the vents and paste from the cpu, all good and clean. i unpluged some unnecesary cables and left only hdd, ram, fan, screen and battery on it but still does the same. it powers off after a second and wont power on again. if i leave it for a while it starts for a minute and the cuts off again. 

It's not overheating at all.

What strikes me as weird is that the power led next to the plug is flickering like if something is draining the power. 

When i leave it or plyg on and off a few times and the led stays on, it starts but only for a few moments.

i even tried leaving just the m/board (nothing else plugged) and still the led flickers. 

Any ideas of what it might be?

[RedRose0528]

@Cool-Z77,

Have a look at this document and it might provide some further information for you.

Please respond back at your earliest convenience.

Thanks

[Cool-Z77]

well neither the caps or num lock blinks, but the pc has two power leds. one next to the plug and one in the front next to the hdd led (also has a power led, one that is on when computer starts and one for when the power suply is pluged in). The led of the power suplly is blinking twice when the computer finally starts. after that it does nothing.

[theamigo]

sorry ... wrong thread...

[theamigo]

Warrenty expired jan 10 2013.
But thanks for helping out anyway.

[RedRose0528]

@Theamigo, 

No problem, I hope everything works out for you. 

If you have further questions don't hesitate to ask. 

[RedRose0528]

@Cool-Z77,

Does that light blink when you are trying to boot with just the AC adapter plugged in with no battery?

Please respond back at your earliest convenience.

Thanks

[Cool-Z77]

it wont boot without the battery.

[RedRose0528]

@Cool_Z77, 

Do you get the same response from the power LED lights. 

Please respond back at your earliest convenience.

Thanks

[Cool-Z77]

nope.

the led blinks 3 times and nothing happens.

as i read in the link you gave me, it says its the memory module.

could that be it?

but if it is why will it boot sometimes even for 20-30 seconds?