Laptop died won't boot

It was not in a docking station or port replicator. I did remove all power sources. It did not help. I eventually did unplug the power source and remove the battery. I held down the power button for 30 seconds then plugged it in. It came on then shut down. I put the battery back in and tried it again with no power supply. Held down power button and it came on. I did find out last night, that it was my processor. Luckily, I had a spare laptop laying around just like the one that died. Put my hard drive in the other laptop and viola!!! I'm in business. I will say, though.. for some reason, when i would plug in my power source, my laptop would immediately shut down on the old machine. But, as of this am, my problem has been fixed! Yayy!! :) It was not in a docking station or port replicator. I did remove all power sources. It did not help. I eventually did unplug the power source and remove the battery. I held down the power button for 30 seconds then plugged it in. It came on then shut down. I put the battery back in and tried it again with no power supply. Held down power button and it came on. I did find out last night, that it was my processor. Luckily, I had a spare laptop laying around just like the one that died. Put my hard drive in the other laptop and viola!!! I'm in business. I will say, though.. for some reason, when i would plug in my power source, my laptop would immediately shut down on the old machine. But, as of this am, my problem has been fixed! Yayy!! :)

Was it in a docking station or port replicator? If you remove all power sources, does that help? Was it in a docking station or port replicator? If you remove all power sources, does that help?