Sony vaio pcg-2j3l desktop will not power on
Just to clarify, the box (power brick) in the middle of the power cord is the power supply. With that said, there is a light on the box (may be green, blue, or some other color). Does it come on when you plug it in (assuming that the wall outlet or serge protector has power)? If it doesn't then the power cable needs to be replaced. If it does then there is something wrong with either the cable going between the box and the computer, the power connector, or the connector on the computer.