MBP won't power up

Sister-in-laws MBP won't power up
It sat for 3-4 months without being plugged in or turned on. When you plug in the power adapter the ring glows orange. Press the power button and nothing happens. Remove the battery and try again; nothing happens.
S-I-L took to the Genius Bar and they tried another battery. Nothing. They told her it was dead and she should scrap it and buy another. She did and and gave this one to me to figure out. Any suggestions, or should I donate it to the parts bin?

Welcome to Apple Discussions!
It seems to me that it would be well worth trying to revive it. Probably the thing to try first is to reset the SMC:
http://docs.info.apple.com/article.html?artnum=303319
Now this is something the genius should have done, but it's possible it was overlooked somehow. It may well be worth another trip to a genius bar for another opinion. Try the reset several times.
But I think the power comes in at the left I/O Board:
http://www.ifixit.com/MacBook-Parts/MacBook-Pro-15-inch-left-I-O-Board/IF185-016
It may well be worth replacing this board if it is faulty for some reason.
Is there any history here--like maybe a spill to this area on the upper left where the mag safe connector is?
But I think it's worth trying to fix it. And even if you can't, it has valuable parts and could maybe be sold for parts to someone who fixes them.
Good luck!

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You may want to try this.
Solution A
Start up your MBP while pressing Option (alt)|, Command, P, R until your hear 3 chimes rather than 2 as indicated by apple. This worked for me the first time.
Solution B
Start your MBP while pressing Option (alt), Command, S
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8. If you are still unable to start up your computer after trying each of these steps, schedule a service appointment with an Apple Retail Store or an Apple Authorized Service Provider. If you plan to visit an Apple Retail store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).
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USB Problem, possibly bad Cable.
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Clean that Dock Port Very Well especially with Isopropyll Alcohol, get a good USB Cable, try a different USB port on computer, or try a different computer.

My kid just got an iPod 5th gen (today from Santa) and it won't power up or charge. The only response is when I connect the USB and press the power button or front button the Battery appears with red line and lightning symbol. No other response at all.

Sorry about the long title.....its my first post.
My kid just got a brand new iPod 5th generation (today from Santa) and it won't power up or charge. The only response is when I connect the USB and press the power button or front button the Battery appears with red line on left and lightning symbol below. There is no other response at all no matter what I do, including holding both buttons down for extended period. My other kid got one and it works perfectly.....I have interchanged usb cables ports etc. but still no response....I would really appreciate any help.

Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Make an appointment at the Genius Bar of an Apple store since you have a hardware problem with the iPod. This is because as you said the same cable works with another iPod.
Apple Retail Store - Genius Bar

MBP won't power up

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