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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
Superdrive not working with El Capitan in OS X El Capitan by relume	Show 4 Bookmarks4	20	13469	September 5, 2016 8:44 AM by relume
How to setup a USB SuperDrive? in iMac by den.thed	Show 0 Bookmarks0	3	73	August 18, 2016 8:35 AM by den.thed
How can you tell when the SMC is reset successfully? in OS X El Capitan by Jake3231	Show 0 Bookmarks0	3	101	August 9, 2016 1:16 PM by Jake3231
MacBook Air battery won't charge after resetting SMC in MacBook Air by jessicagenemarsh	Show 0 Bookmarks0	7	251	August 4, 2016 8:57 AM by jessicagenemarsh
my MacBook Pro late 2008 only beeps when trying to turn it on in MacBook Pro by leroydouglas	Show 0 Bookmarks0	2	36	July 29, 2016 12:47 PM by leroydouglas
Startup Problem: status bar hangs at 3/4 in MacBook Pro by Roger Crowley	Show 0 Bookmarks0	5	82	July 27, 2016 5:28 PM by Roger Crowley
Turn MacBook Pro on and get white screen only in MacBook Pro by Esquared	Show 0 Bookmarks0	1	125	July 25, 2016 11:36 PM by Esquared
Why does the battery icon on my MacBook Pro have an X through it? in MacBook Pro by dwb	Show 1 Bookmarks1	4	80	July 19, 2016 9:37 AM by dwb
My computer won't shut down or restart in MacBook Air by Linc Davis	Show 0 Bookmarks0	1	177	July 18, 2016 6:53 PM by Linc Davis
screen showing waves after replacing main board in MacBook Pro by lllaass	Show 0 Bookmarks0	3	82	July 14, 2016 12:47 AM by lllaass
my mac book keep ejecting cds and dvds in MacBook Pro by lafras	Show 0 Bookmarks0	0	28	July 13, 2016 10:39 AM by lafras
Sd slot and usb flash drives not being recognized on mac running El Capitan 10.11.15 in iMac by Alwayswantingtohelp1	Show 0 Bookmarks0	1	53	June 25, 2016 7:04 PM by Alwayswantingtohelp1
Mac mini will not startup in safe mode in Mac mini by swrench	Show 0 Bookmarks0	5	141	June 12, 2016 11:32 AM by swrench
SMC reset. battery removable or battery non-removable? in MacBook Pro by Courcoul	Show 0 Bookmarks0	5	284	April 26, 2016 7:17 AM by Courcoul
El Capitan (version 10.11.4 15E65) is causing great difficulty when waking after extended periods of time in OS X El Capitan by Ron on Marco	Show 0 Bookmarks0	9	201	April 24, 2016 10:18 AM by Ron on Marco
If you got to the mac store, in2015, to buy a computer, is it common for the to sell you a computer from 2012? in MacBook Pro by BobTheFisherman	Show 0 Bookmarks0	4	170	April 8, 2016 1:47 PM by BobTheFisherman
imac superdrive just ejects music CDs in iMac by joe_7399	Show 1 Bookmarks1	1	82	March 27, 2016 8:18 AM by joe_7399
Power Button iMac 27 Late 2012, not working... But it "automatically" (re)start up, because the schedule that I did. What could it be? Is it a POWER BUTTON, OR/AND a POWER SUPLY defective? in iMac by jairocsa	Show 0 Bookmarks0	0	93	March 21, 2016 5:07 PM by jairocsa
Unable to rest SMC with suggested keys combination in Developer Forums by To_Mi	Show 0 Bookmarks0	5	411	March 7, 2016 4:08 PM by To_Mi
iMac not starting in iMac by judysings	Show 0 Bookmarks0	1	234	March 6, 2016 12:09 PM by judysings
Updates in MacBook Pro by KimUserName	Show 0 Bookmarks0	2	97	February 19, 2016 9:06 PM by KimUserName
I cannot get my MacBook Pro to recognize any external displays in MacBook Pro by OGELTHORPE	Show 0 Bookmarks0	1	80	January 29, 2016 5:47 AM by OGELTHORPE
Responce is slow/will not in iMac by rkaufmann87	Show 0 Bookmarks0	1	76	January 26, 2016 1:28 PM by rkaufmann87
When i turn on my new macbook air, the fan starts making loud noses. i got this less tha a month ago and I've took good care of yhis. i tired ressetting the smc but it didnt work. PLEASE HELP in OS X El Capitan by BobHarris	Show 0 Bookmarks0	3	147	January 16, 2016 8:23 PM by BobHarris
Imac shut down when I restarted it after I trying to print a document. Prior to that it worked fine. in OS X El Capitan by Nolaninc	Show 0 Bookmarks0	2	85	January 15, 2016 8:55 AM by Nolaninc
2010 Macbook Pro is stuck in sleep mode, will not wake up, reset SMC already, no luck in MacBook Pro by BM25	Show 0 Bookmarks0	7	288	January 10, 2016 1:56 PM by BM25
How can I get my MacBook Pro to start if I installed El Capitan and it is frozen after the installation in MacBook Pro by redsfromroodepoort	Show 0 Bookmarks0	0	93	January 9, 2016 10:43 AM by redsfromroodepoort
My MacBook Pro when I start it it only shows a black screen I got it in 2013 so idk the model but the fan or something is working a lot also when I turn it on can someone help me? in MacBook Pro by lllaass	Show 0 Bookmarks0	2	168	January 2, 2016 4:11 PM by lllaass
Screen sharing corrupting SMC on target mac? in OS X Mountain Lion by sjallen	Show 0 Bookmarks0	0	59	December 31, 2015 11:35 AM by sjallen
My macbook Pro will not start. in MacBook Pro by 20484paul	Show 0 Bookmarks0	1	222	December 28, 2015 9:40 AM by 20484paul

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