Not turning on, but chargin working

Hi guys, thanks for read this post, I have an estrange  case: I own a laptop HP ENVY 17 NOTEBOOK PC , today I have open and change the thermal paste of the CPU and GPU, I have clean with air all the internal computer. I have assemble and test playing Fallout ;) once I finish I get out the battery and clean with wet toals the keybord and turn on btn.

Once I finish I keep dry 2hr, once I finish I try to turn on and it make some estrange sounds, this sounds are from the spears and it doesn’t turn on.

I have open the laptop, check all. There no burning smell or any dark mark, I have double check all parts but all see good, i have found that once I press the turn on I get 1 second of move on the fan in the laptop, it can charge without any issue but I cant get it turn on.

Any ideas to fix this PC?

Thanks for all!!