Chosen Solution
It won’t do anything!
I don’t think we can offer you much here as without any clues we could go to many different directions which could be costly. If you can I would return the system and get your money back as that might be the cheapest way out. If that is not an option, I would recommend bringing it into an Apple Store as they can diagnose the system as well as repair it. Sorry this isn’t much of an answer.
Christina, I do agree with Dan if you are not comfortable to work on your own computer. There are a few things you could do yourself. One would be to to make sure that your AC adapter works. After that, check to see if you get power to your I/O board. Use these guides to work on your computer.
I understand this is an older thread, but I just had one of these in my shop for no power and no light on the magsafe charger. My customer to it to a local Mac retailer (no Apple store in immediate area) and they wanted $450 to send it to Apple just for diagnosis!!! I was able to determine that the mainboard has some slight liquid damage to it. Toward the rear of the laptop an unused pop connector had slight corrosion on a couple of the leads. A few shots of QD Electronic Cleaner and slight scrubbing with a toothbrush to remove the corrosion was all it took to return the laptop to a working state.
