Pc goes off after 1sec boot?

I have a problem and although since yesterday evening I want to start my Asus notebook or laptop, but after 1seconds after I've switched on, he's off again, that means the screen stays black and I have no way to get into the BIOS because it's too fast out, it does not even show me anything.

The power supply can't be, because I've already tried it.

It MUST be something else, I'm not sure about the CPU, but I do not think so either.

Ask for good answers to help, because as I said, I can't even start the laptop 1 second. (It can be recognized by the yellow light that lasts permanently when the PC is on.

However, if I press for a long time like 15sec, the light stays on until I let go, nothing happens on the PC itself.

Asus laptop

GTX Geforce 820M

Intel Core i5.

Thanks in advance.

Replace the Cmos battery (button cell)

Ask for good answers that help

With pleasure.

A short circuit could be the trigger. A short circuit can occur anywhere and with the necessary knowledge and skills, you can find it too.

Okay, do you know how to fix that?

I'm just trying it out, it's hard but I'll let you know if it worked

That can be 100 different problems. From short circuit on the supply line to faulty voltage regulator, processor or memory everything is possible.

Usually the laptop should make some noise on a faulty processor, but that does not necessarily have to be because it depends on what the motherboard does in this situation and a desktop motherboard behaves differently than a laptop motherboard

Have found the evil, it was due to the RAM.