Sony VAIO PCGGRX560

My laptop won’t boot up.
It powers up but then doesn’t proceed any further.Fans stop and I can’t get into the BIOS scrren to check things out. CD drive doesn’t work, hard drive doesn’t power up.I don’t know enough about laptops to properly diagnois this problem.Green light is on showing that laptop is on.Is this a ram issue or a bad motherboard possibly?
Any suggestions?