Laptop not powering on/booting

[Ruser4]

Hello, I dropped my laptop(a few cm) and now it won't power on.(A week earlier I took it fully appart, to replace the keyboard. I might have damaged its fall resistance/not put a connector in securely)

When fully off, all Led are off. The when I plug the charger in the charger led starts at orange(if I let it charge it will become white).

When I press the power button the power button led comes on and starts blinking. The charger supply port led will now also start blinking(both quite slowly). Holding the power button does nothing. Nothing else happens. I can unplug and it will run on battery.

I have opened up the case but all cables seem to be properly connected. I have tried selectively disconnecting and swapping components, but this doesn't help. 

I looked into the manuals but could find no information about any form of status/error indications bu the laptop. 

If I leave the laptop on with the led blinking, it will discharge fully in a single night.

Does anyone know what I could do, to debug this? Any manuals or tips?

(Note: I am long out of warranty)

[Ruser4 · Accepted solution]

I walked way, without it on the charger and it just booted up out of nowhere after a hour or maybey more.