Asus G750Jw won’t turn on after dry cleaning

My asus was overheating frequently but wasn’t shutting down. The fan was blowing hot air strongly. After a long time procrastinating, I decided to clean the Fan and opened my laptop to clean with a brush. So, I took care to open and clean the fan which was dusty. But when I reassembled my laptop the power wasn’t turning on anymore. The battery power light is on like charging, and when I press the power button the laptop doesn’t do anything or sound, but the battery light weakens.. that’s all.

Would anyone have a solution or hint for that?

Thank you!