Chosen Solution
Hello, When I turn on my MacBook it just stuck on a white blank screen, then after few seconds it shutdowns by itself.
Could be a bad hard drive, hard drive cable or ram which are removable parts. Can you hear a chime sound when the Mac turns on? What I recommend is unplugging the drive cable, removing one stick of ram and see if the MacBook stays on. Also try the other stick individually to rule out a bad ram stick.
