How to diagnose a broken laptop?

Question

Do it yourself

When you turn on the laptop, the light comes on, the cooler turns on, it starts to heat up, but it does not go to the next stages (bios, etc.).
What is the problem ?

Answer 1

If the laptop often overheated and turned off due to overheating, then there is a possibility that this north bridge is acting up

Answer 2

POST-card is your faithful assistant and friend!

Answer 3

Take it to service. It's useless to guess here.

Answer 4

What laptop, manufacturer, model?
Try first, turn off all peripherals (hdd, drive, wifi module)
Throw in a known working memory bar. If the bios won't load anyway, drag it to the service ...