![]() If you launch apps and the icons bounce on the Dock for an extended period of time, or applications don't function correctly (for example: they stop responding after being opened). The display brightness of your screen cannot be adjusted as it normally could, or the target display mode isn’t working properly. If you notice that your computer’s fans are constantly running at high speed (or not running at all), and your Mac is overheating despite no heavy use, then this is a sign that you need to reset the SMC. On hot summer days your Mac may overheat, but that’s only occasional. Resetting SMC is usually the final step for fixing strange behavior of a Mac and helps only if you have issues with the following: Mac Cooling Fans and Fan Management SMC is responsible for low-level functions in Intel-based Macs such as power and hardware management, which includes – but not limited to – battery and thermal management, external video sources for some iMac displays, closing/opening of the display lid on MacBooks, and power button presses. Before Apple switched to Intel processors in 2006, it used PowerPC processors supplied by Freescale (formerly part of Motorola). You’ll find an SMC or System Manager Controller only in Intel-based Macs. Here we will cover the latter and tell you why, when and how to reset the SMC to solve certain Mac problems. ![]() There are two system functions that can be reset that might resolve your issues, either the NVRAM/PRAM or the SMC. ![]() ![]() If your Mac is behaving strangely and you feel every possible troubleshooting option has been exhausted, then there are probably still two steps left to try first. ![]()
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