Can laptop start without memory

[whoareyou]

Hello,
I tried to disassamble laptop for the bad memory.(Just to check where the memory slot locate)

after that I connect the laptop with the ac adapter, green light is on.
Then I press the power button, laptop no reaction at all. (with or without the bad memory)

 

[hang-the-9]

Should be beeping even with no RAM, could be a motherboard issue, or you did not put something together right, or you broke something while taking it apart.

 

[whoareyou]

Should be beeping even with no RAM, could be a motherboard issue, or you did not put something together right, or you broke something while taking it apart.

now I disassamble all the part, excluded motherboard, cpu, gpu, still no reaction when pressing the power button

 

[hang-the-9]

Time to take it to a repair shop, sounds like there is a connection not made or broken.