My mac switched off

My mac was just switched off abruptly when connecting to a usb to charge my portable battery. I waited and again switched on but it wont turn on i pressed power button so many times and battery indicator also nothing is working. Tell me how solve this problem. Should i go to i store? Can this problem be self solved?

Hey davinci007,
Thanks for the question. The following resource provides troubleshooting information if your computer won’t turn on. Included, you’ll find information on resetting the SMC and other helpful steps. If your issue persists, see step #6 regarding information about visiting an Apple Store or Authorize Service Provider.
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/TS1367
Thanks,
Matt M.

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