My mac book wont start up.

I shut down last night normally but today nothing. I press the power button, The hard drive makes the two little sounds it always makes but no orchestra start up sound and the drive doesn't seem to start spinning either. I have taken out the battery, unhooked all external hardware, tried starting up with command+option+p+r to clear the memory and nothing works. I'm going to take it in on Monday but I have work to do so if anyone can suggest a do it yourself idea, I would really appreciate it. Thank you.