SOLVED: Does not power up, sleep light only blink once. - MacBook Pro 13" Unibody Early 2011 - iFixit
My HP laptop won't start but charging LED is blinking even without the charger plugged in. How can I solve this? - Quora
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Dead MacBook Pro - Blinking, green MagSafe (no orange) - won't charge, won't turn on | MacRumors Forums
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