When the computer is turn on it makes no sound and there are no lights?

Is it plugged in? Is there a switch on the back of the computer near where the cord from the wall plugs in? Some power supplies have their own power switches. If yours has one, try switching it the other way and turning the power on. Do you smell something like a burned smell, or like something got really hot? The power supply might have burned up. If the computer is plugged in, and there is no switch on the power supply, you need to take it to a repair shop.