My pc isn't turning on after cleaning

Hello, im Benjamin from Chile. This is my situation:

Yesterday i had the curiosity of look inside my laptop, to clean it in case it was dirty, y do not disconnect nothing, i just, quited the case, cleaned the fan, and no much more. but when i closed it and i tried to turn it on, it had no display.

I dont know why, im not an expert in this things, but i have not doing something bad i guess.

This are the signals:

The lateral led lights that indicate the charge works.

Sound a "Pip" when i connect it while it is "turning on"

The screet dont emit any light, its absolutely black

I hope someone in the internet can help me.

i wish you a great day!