Question Lenovo Y520 won’t start

[PeteSA]

Hi All

My laptop (Lenovo Y520) won’t start.
When I turn on the power button the power in light comes on, but the laptop does nothing. The keyboard doesn’t light up, the fans don’t start and the screen won’t start.
I tried replacing the SSD but this had no effect. I am unable to start with the Lenovo reset button as well. It also only starts up the on indication light and nothing further. Any suggestion on how to get it working again? Or where to look for the issue?

 

[helpstar]

if you plug in the charger, does the led next to the plug light up?

wait for an hour, check if the led is still on and try powering on by pressing the power button

 

[PeteSA]

if you plug in the charger, does the led next to the plug light up?

wait for an hour, check if the led is still on and try powering on by pressing the power button

Yes there is a white light next to the connecter.
When I push the start button the white light on the other side of the laptop also lights up

 

[helpstar]

reset the laptop by pushing something thin into the reset hole

 

[PeteSA]

If I reset it. I get the same response as when I push the power button. Nothing responds expect the power indication light on the right

 

[helpstar]

did you charge it for several hours?

 

[PeteSA]

did you charge it for several hours?

I left it on charge overnight and still the same response (no response) when I push the reset button.

 

[helpstar]

remove all unnecessary parts to eventually get into BIOS
M.2 SSD, Sata Drive, wifi card

eventually replace the CMOS battery

check if the charger jack is still soldered to the motherboard