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Hi all, first question here :) I’m facing very odd behaviors on my mbpro, can you help me fixing it? Laptop: MacBook Pro 8,1 (Late 2011) List of related (I think) issues: shuts down during boot: Apple Logo, progress bar ~10%shuts down during recovery boot (Cmd + R): Apple Logo, progress bar ~10%shuts down after internet recovery (Cmd + Option + R): sometimes I can see the GUI sometimes notcharger light behaves oddly: sometimes doesn’t turn on and sometimes is working well (can’t get the logic)after a random shutdown I can restart the Mac only resetting SMC, if I don’t reset the SMC the power button is dead What I did so far: changed battery with a new one (side leds are Ok)run without battery, same issuesrun without HDD, internet recovery issueSMC + PRAM resetremoved HDD and used a new one with internet recovery, same issuesrun Apple Hardware Test (D) both short and extended mode, no errors in both caseschanged thermal paste Booting with Cmd + V:

Question: What I can do right now? My two cents: dying SMC controller? Thank you all for your time :)

Review what I wrote up here: Are Unibody 13" HDD Cables are compatible between years 09-12? It will explain the issues and the needed part and why.