Hi I have a Dell Inspiron 15-5577 laptop.

It was working fine yesterday.

Today I press power on and I can hear everything start up then it automatically shuts off after a second

ive removed the hard drive, battery and Ram. When I press power on it stays on but screen remains black.

I added everything 1 by 1. When I add the RAM it auto shuts off after a second. So I put a working RAM in the slot which is compatible, now it auto shuts off after 5 seconds instead of 1

Can someone help me please?

Thank you