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How To Reset PRAM/NVRAM and SMC: Detailed Guide
Scored this iMac late 2009 for free, the person who gave me it thought it had a graphics issue, one pram reset and software update later, it works great! : r/mac
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Further Explained: Apple's iMac 2011 Model Hard Drive 'Restrictions'
iMac 27" mid 2011, constantly restarts ru… - Apple Community
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De Mac System Management Controller (SMC) herstellen - appletips
Mac Start niet - Volg de 12 tips - Mac Support wij helpen u graag!
