Ok this laptop was for a customer of my dad the screen was damaged but when i connect it to a monitor it worked. It was too expensive for her so he gave it back now 2 days ago i bought it from her for cheap. But when i tried switching it on nothing happened no lights flashing nothing its like it is dead. I tried the battery on another computer and it works , the charger works , the RAM works , the hard drive also works. I only havent checked the processor. Any help of what the problem could be ?