What should I do if my VAIO computer does not turn on or the power button does not work (the power indicator light blinks fast)?

• Your VAIO computer may not recognize the battery pack.
  In this case, push and hold the battery off button for three to five seconds with a thin, straight object (such as a paper clip).
  If the problem persists, contact an authorized Sony service/support center and replace the battery pack with a new one specified by Sony.