Laptop does not start

It was really strange that the laptop did not boot. It looks like the battery was emtpy in the first place but also after applying power nothing changed. It also was odd that none of the leds glowed while the power adapter was plugged in.
2 answers

It is wuite normal that conductors from battery circuit are gone thus it is neccessary to remove it a wait some time. If this does not help, laptop died :)

Remove/insert battery

The solution is as simple as the title. After removing the battery and cleaning the power interface between the laptop and the accumulator it started booting again. Also the whole leds were glowing while charging the battery