If your laptop does not turn on when you press the power button, it could be because of many reasons. Maybe your Ram stick is dead or it could be any other motherboard issue. But here I am sharing my experience that could be helpful for you. I have a Dell Latitude E6530 laptop that I bought in used condition. I put my laptop in sleep mode, closed the lid, and remove the charger. But after some hours when I tried to power On my laptop, it didn’t start. I checked the charger it was Ok, but neither the charging light on the laptop lit nor the laptop starts.