Could be your psu is dead. Most of the time when a pc will not turn on is a dead psu. I don't know if you have an extra psu to try out and see if that is the problem.
I am sorry, but I do not know what a psu is on a computer, where do I find it? When I push the button to turn on my computer, it just blinks and goes off. Any help is greatly appreciated. Thank you