Sony Laptop black screen

[dswortz]

I have a sony vaio laptop that when I try to start it up it shows that it is charge but no screen comes up. I have tried to drain the battery down by taking it out and holding down the power button for 30 seconds, also have tried to reseat the ram nothing tried to change and reseat the hard drive and still nothing I have no idea of what to do please help with anything I don't have money to buy a new one at all

 

[dswortz]

also the laptop will not connect to an external monitor