HP Probook 450 G2 Black Screen, No Boot

[Nobuemon]

Greetings, i have an issue startimg up the notebook and have tried some troubleshooting with no positive results.

When the power button is pressed, the fan starts up and the Caps Lock blinks once then both it and the ppwer button turn off. The volume led is white, Network orange and the cpu fan is working but its not displayimg anything and is unresponsive to anything. 

The issue occurred after just closimg the lid one night after working, it wasnt plugged in.

Here is what i tried so far:

* Full charging it, same result.

* Removing the battery and letting it power up via ac, same result.

* Dispersing leftover charge by removing ac and battery then holding the power button for 30s, 1m, 2m. Same result.

* Switching ram to another socket, Same result (i dont have another ram stick)

* Removing the ram, hdd and ssd then trying to start to see if it displays an error or sound code, nothing.

* Removing the cmos battery and insering it again (it has a chwrge of 3.2)

* Replacing the thermal paste and cleaning the cooler, same result.

* Win+B then holding power for 1-3 sec, same as win+V no result

* Connecting to an external displat, nothing

The code seems like the cpu faliure one (caps lock blinks once) but the cpu has no short and no fuses are blown. Same with the other chips.

Any advice on the issue

[Nobuemon]

I just noticed the charger led blinks 2 orange then one short white when i try to turn it on, does anyone know what that means?