The projector was connected to the power source by a homemade electric extension.
And, Thats why.
I put the VGA Cable to the Projector (this one being still turned down) and then when i was getting close to the VGA port of the Laptop... BAM! A big spark appear between the port and the cable!.
The outer casing of a VGA port should be a ground. It was probably at high potential. The other end was at ground potential. Apparently that caused a bolt of electricity to jump across and zap your laptop since electricity goes from low potential to high potential
Inmediately the whole electricity of my floor went off.
And, thats probably the fuse or ELCB preventing anything bad from happening.This means there's a short circuit somewhere.
As for the laptop still working, well, you got lucky, and the electricity probably got conducted to ground. It might have fried something but we can't tell without you testing it.