I was just charging this one day, boots it up. I get a blue screen, so I am like it's fine because it happens for the first startup of the day once or twice a week, and that was the first time that week. It restarts (and normally would work) and I get another blue screen. After that, the computer just did not boot up, lights shown that the battery was working, even tried it with AC. When I take it apart, and I boot it, the fan spins for approximately 3-4 seconds than just shuts off. It doesn't even show the Lenovo splashscreen anymore, it's just black. What I am asking is that how do I know if the motherboard needs to be replaced or what changes need to happen?