Update of what is going on. We purchased the laptop connector which took 2 weeks to get it, but that didn't solve the problem.
And since I don't have any spare parts to troubleshoot the mother board, we just going to send the laptop back to the shop we purchased it from so they can further do the testing.
Wanted to see if I could fix the problem, but can't with no available spare parts for troubleshooting. (IT is originally what I studied + interned and learned from online sources as well, the down side is that for solo repairing you need spare parts for testing)
So yeah , will be back around 3 to 4 weeks.