MacBook Pro Turns On, But Will Not Boot

I recently have had trouble with my MacBook Pro (2.4GHZ Duo Core purchased in late '07). Last night before I went to bed I put my computer to sleep after normal usage of my computer. I did not update anything such as firmware or progams in the past few days. I had it connected to a WD external drive and an external monitor as I have for months. When I went to wake up the computer this morning it would nothing appeared on the screen as it normally does. I waited and tried different things, but no luck. After a minute or two, I just turned it off by holding the power button down. After a moment or so, I turned it back on. The cd-rom drive spun up, but the computer did not post (chime), hard drive seemed not to be active, and nothing appeared on either the external display or the internal LCD. I then turned off the computer again. I disconnected everything, removed the battery for a few minutes and then tried to start it again. The same result appeared each time: cd-rom spins up, no hard drive activity, no display.
I tried various things that was suggested in the Apple Support area such as resetting the PRAM & SMC, as well as trying to get it to boot in safe mode and entering the BIOS. Nothing. Before I take it into the Apple store to have it looked at since it is very far away, I was wondering if anyone had any input on what could be wrong and if I am able to fix it myself. Thank you.

It's possible that you have the NVIDIA problem:
http://support.apple.com/kb/TS2377
Not really sure why it won't boot at all. People have reported suddenly getting no video at all, but I think they usually do get the startup chime.
Probably the best bet is to make the trek to the Apple Store, as this sounds very much like a hardware problem. They should be able to test specifically for the NVIDIA problem.
Good luck!

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LED 1—CPU A: red—contact Apple or an Apple Authorized Service Provider
LED 2—Overtemp: red—contact Apple or an Apple Authorized Service Provider
LED 3—Power On: red—the main power is on
LED 4—Trickle: yellow—Power Mac G5 is plugged into the wall correctly
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LED 6—CPU B: red—contact Apple or an Apple Authorized Service Provider
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MacBook Pro Turns On, But Will Not Boot

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