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HT201295: Reset the System Management Controller (SMC) on your Mac

Learn about Reset the System Management Controller (SMC) on your Mac

Discussions

Title			Views	Latest activity
Speaker Problems on MBP Late 2011 in MacBook Pro by kaz-k	Show 0 Bookmarks0	1	15	September 28, 2016 9:07 PM by kaz-k
I have tried disconnecting my MacBook from the charger but this doesn't make any difference, it still makes the whirring sound when I plug it back in. in MacBook Pro by jeremy_v	Show 0 Bookmarks0	1	31	September 28, 2016 4:06 PM by jeremy_v
camera not working in MacBook Pro by lllaass	Show 0 Bookmarks0	1	31	September 28, 2016 2:44 PM by lllaass
I was installing sierra but can't finish because my mac won't re start. Finder won't quit. in macOS Sierra by Grant Bennet-Alder	Show 0 Bookmarks0	2	96	September 28, 2016 2:43 PM by Grant Bennet-Alder
imac fan running in iMac by den.thed	Show 0 Bookmarks0	7	38	September 28, 2016 1:17 PM by den.thed
Sierra will not mount my Macintosh HD in Mac Pro by BroKenneth	Show 0 Bookmarks0	6	76	September 28, 2016 8:40 AM by BroKenneth
My MacBook screen went black and now the screen won't turn on in MacBook (13-inch, 2006-2010) by Jrkpatel	Show 3 Bookmarks3	84	520344	September 28, 2016 5:40 AM by Jrkpatel
can't see screen after auto start up scheduled in Mac mini by lllaass	Show 1 Bookmarks1	1	71	September 28, 2016 5:08 AM by lllaass
Mid-2010 Macbook Pro doesn't boot, only turns on sleep LED (16 GB RAM, 240 GB SSD) in MacBook Pro by OGELTHORPE	Show 0 Bookmarks0	3	57	September 28, 2016 4:40 AM by OGELTHORPE
how to fix bootcamp error: No bootable device --- insert boot disk and press any key in Boot Camp by khushbaj	Show 0 Bookmarks0	9	192	September 22, 2016 4:44 AM by khushbaj
home sharing won't work after second sleep in iTunes for Mac by Kenichi Watanabe	Show 0 Bookmarks0	3	34	September 28, 2016 1:50 AM by Kenichi Watanabe
HDMI Splitter El Capitan - Sierra in Mac mini by Stephan Pauler	Show 0 Bookmarks0	7	138	September 27, 2016 10:08 PM by Stephan Pauler
New MBP Battery Drain on Sleep in MacBook Pro by StacknMac	Show 0 Bookmarks0	4	57	September 27, 2016 9:08 PM by StacknMac
No WIFI after sleep in Mac mini by K Shaffer	Show 0 Bookmarks0	1	157	September 27, 2016 7:07 PM by K Shaffer
My Macbook air keyboard backlight do not off when shut down after update system version to macOS Sierra in MacBook Air by kaz-k	Show 0 Bookmarks0	1	46	September 27, 2016 6:34 PM by kaz-k
MacBook Pro late 2011 Trackpad not working after upgrade in macOS Sierra by BobHarris	Show 0 Bookmarks0	7	75	September 27, 2016 4:56 PM by BobHarris
Macbook logs me out while I am using it. in MacBook Pro by OGELTHORPE	Show 0 Bookmarks0	1	30	September 27, 2016 4:37 PM by OGELTHORPE
Months-old Macbook is fully charged but says it has not Battery? in MacBook Air by Kappy	Show 0 Bookmarks0	2	20	September 27, 2016 4:06 PM by Kappy
iMac late 2012 edition crashes on restart after installing Sierra in macOS Sierra by JimmyCMPIT	Show 0 Bookmarks0	8	124	September 27, 2016 3:14 PM by JimmyCMPIT
sound output only lists internal speakers when usb is connected to dac in MacBook Pro by BRnative	Show 0 Bookmarks0	2	55	September 27, 2016 3:12 PM by BRnative
Opening Photos and Documents are VERY VERY slow - makes me crazy to see the spinning ball for so long in macOS Sierra by chris_g1	Show 0 Bookmarks0	1	24	September 27, 2016 12:40 PM by chris_g1
Not to restart or shutdown Sierra in macOS Sierra by chanyi0305	Show 1 Bookmarks1	15	1848	September 27, 2016 10:06 AM by chanyi0305
Mac Pro 2010 unresponsive after sleep, and had to be powered down forcefully twice today. in Mac Pro by JimmyCMPIT	Show 0 Bookmarks0	1	25	September 27, 2016 9:50 AM by JimmyCMPIT
boot camp and windows 10 in Boot Camp by Loner T	Show 0 Bookmarks0	5	134	September 27, 2016 9:16 AM by Loner T
Macbook Pro internal microphone not functioning in MacBook Pro by iRion	Show 0 Bookmarks0	4	85	September 27, 2016 7:22 AM by iRion
Got a MacBook Pro running OS X El Capitan. System is very slow in MacBook Pro by Lexiepex	Show 0 Bookmarks0	13	167	September 27, 2016 7:14 AM by Lexiepex
Colours of My MacBook Pro distorting after upgrade to Mac OS Sierra in MacBook Pro by dominic23	Show 0 Bookmarks0	1	70	September 27, 2016 5:46 AM by dominic23
My macbook pro retina A1502 13" SSD drive dies randomly in MacBook Pro by minstore	Show 0 Bookmarks0	2	27	September 27, 2016 5:15 AM by minstore
Ask in MacBook Pro by Jussross	Show 0 Bookmarks0	2	44	September 27, 2016 4:34 AM by Jussross
My MacBook Pro retina late 2013 batteries drain in sleep mode in MacBook Pro by FelixRaven	Show 0 Bookmarks0	18	252	September 26, 2016 1:34 PM by FelixRaven

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