you should plug magsafe first and only! and your computer will automatically boot. Then plug magsafe adaptor without try to press power button. Then shutdown, remove magsafe, remove original battery and replace it with new one. and check battery status, it should say "charging". replace battery with original one (The one that come with your computer) then Boot it, plug magsafe (power adaptor). (reset smc, pram, everything) and it useless. I done many things in this post and other. also say "replace now"Ĭause of this problem is the new battery have no remain charge and it absolutely 0%. the battery status say "not charging" use power adaptor as source. i bought new one from my local shop and it cannot open without plug magsafe. Found this problem and already fixed it! my computer is Macbook pro retina 15" mid 2012.
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