iMac 27" mid 2011, constantly restarts ru… - Apple Community
How to reset your Mac's NVRAM, PRAM, and SMC - YouTube
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De Mac System Management Controller (SMC) herstellen - appletips
How to Reset SMC, PRAM, and NVRAM on Mac?
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How to resetting SMC on an Apple Macintosh computer - macOS troubleshooting - YouTube
How to Reset SMC, PRAM, and NVRAM on Mac?
NVRAM en PRAM resetten op de Mac: waarom en hoe?
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2011 iMac Graphics Card Upgrade | Page 753 | MacRumors Forums
How to Reset PRAM and SMC on Your Mac.
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
How to reset the SMC, PRAM and NVRAM on a Mac Desktop - iFixit Repair Guide
