Laptop wont boot

I have a problem with laptop
After plug-in charger there is a charging light even without the battery...
After pressing power button the power light comes on laptop won't start. Fan doesn't spin.
Can someone help ?
I will be appreciated for any suggestions
Informations about voltages:
Charger connector 19.35
Power button 3v
2 mosfets after charging port 19.35v
Super IO chip 3.3v
Bios chip 3.3v
Coils near ram 0
Ram pins 0
Coils near CPU 0 or measure wrong
I can add some pictures

Pls help

Weird thing - charging light is on when charger is pluged without battery

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Re: won't boot

I'd start with replacing the PSU, then the motherboard,

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Kees is right.

As I never see motherboard schematics you replace from the cheapest parts to the last part it could be.

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