MacBook :: Shuts Down When Unplug Magsafe - Reset PRAM / SMC To No Avail
May 18, 2012
I have tried SMC and PRAM resets, and the issue has not been resolved. My magsafe is lit up with a bright green led. Battery status is "Not Charging." When I unplug the magsafe, the system immediately shuts down. Battery is brand new with only 2 cycles. While I can use the laptop with power connected, this is an issue that needs to be corrected asap, as I use this computer for performances consistently and if the power cord gets removed, I'm not in a good place.
Info:
MacBook, Mac OS X (10.6.8)
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Jun 26, 2012
I lost the startup tone a couple days ago. I repaired permissions, did an SMC and PRAM reset and it makes the tone while doing the PRAM reset but the next time you turn it on it doesn't make a sound.
Info:
iMac, Mac OS X (10.6.8), 3.2 GB Dual Core
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Jul 28, 2009
This may seem like a really simple question to someone who is familiar with Macs, but I am brand new. When I hibernated my old Vista laptop, I always unplugged the power adapter (it go too hot if I left it plugged in overnight). With the Macbook (Macbook Pro 13, mid-2009), should you leave the Magsafe Adapter plugged in, or is it OK to put the Macbook into sleep mode overnight, and leave the charger plugged in? I don't want to deplete the battery (that flashing LED makes me wonder what kind of battery draw there is in sleep) by putting my laptop into sleep mode for eight or so hours, and not have the charger plugged in.
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Jun 29, 2014
As soon as I unplug the power of my MacBook Pro, it shuts down, and all of my unsaved stuff is lost.
PS Is the battery user replaceable? I am using the Mid-2010 model.
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Aug 9, 2009
I have already covered these steps:1. I have tried a safe boot. 2. I have tried to reset the NVRAM and the PRAM.3. I have tried to reinstall OSX from the Install Disk.4. I have tried to repair the HD and tried to repair permissions using the Disk Utility. he issue started out as the flashing Apple/Question Mark Folder/"No" sign. I attempted to follow the steps on the Mac Support Forums (ones listed above) and the issue developed into the picture shown.
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Mar 6, 2012
I have a MBP 13inch from 2011
recently i zapped my Pram becuase i was having trouble with a external screen but when I turned it on again the screen when to the grey screen with the apple logo and spinning gear but after 2 hours of wating the screen is still the same. What can i do to get back onto my mac?
Info:MacBookPro, Mac OS X (10.6.8)
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Sep 7, 2014
I have inadvertently left my 2011 MBP running with a processor intensive music app running. The battery ran out before i realised.. When i attached the power lead to charge it, the computer automatically restarted without even pressing the power button. The computer had not entered safe sleep mode, presumably because my music software was still running.Â
Since then the computer will not ever enter safe sleep when the power runs down. The battery just cuts out each time when it drops to less than 5%, it does not run out at 0% like it usually does. if it is the logic board battery because i have had this issue a couple of times before but it rectified itself after a few days. I have checked that safe sleep is enabled which it is, but the computer just cuts out before safe sleep kicks in.
Info:
MacBook Pro (13-inch Early 2011), OS X Mountain Lion (10.8.5)
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Mar 12, 2012
when i do a PRAM reset, they will prompt me for a password or serial, may i know what password or serial is that?
Info:
MacBook Pro, Mac OS X (10.7.3)
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Dec 2, 2014
Recently my MacBook Air has failed to wake from sleep mode. The Apple illuminates on the back of the screen casing, but neither the screen nor hard drive actually wakes up. The only way I'm able to use the computer is by forcing a PRAM reset on restart (command-option-P-R). I've had to do this several times in the last two weeks. Â
The only things about my MacBook Air that have changed in that time period are:Â
- I installed OS Yosemite
- I installed and ran Sophos Anti-VirusÂ
(The latter was installed to counteract a problem that I was having with my email address having been spoofed and sending spam. Sophos found two bits of malware in email data files and "cleaned" them up.) Â
Info:
MacBook Air, OS X Yosemite (10.10.1)
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Aug 22, 2010
Today I noticed that my mid 2010 MBP is not automatically sleeping. I ran Apple's extended hardware test, along with TechTools Pro 5 from AppleCare disk. Both passed. Reset the SMC and PRAM. I'm still not able to auto sleep. Is there a way to see what exactly is causing my computer to not automatically sleep? Console messages or something?
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Jul 9, 2009
I recently purchased a 13" 2.26 stock macbook. It's perfect, screen is good (no scrolling issues or purple blues) with no dead pixels, no slanted keys, and no scratches.
I updated the firmware that addresses the SATA 1.5 issue. After the update, I reset PRAM. I held down the buttons till I heard the second or third startup bong.
Here is where it gets funny.
Now, when I reboot or start up my computer, the start up noise is loud. Even with headphones plugged in and also the volume turned to its lowest setting (even with volume turned off). Eventually, to control the startup noise, I had to install the startupsound program in my system prefs as mentioned on other threads and that has seemed to control the startup sound.
I was wondering, if by resetting the PRAM if I have harmed my computer in any way. Should I be worried about deeper issues with my computer since the startup sound was not previously being affected by reducing the volume to zero with headphones plugged in?
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Apr 29, 2012
Firmware password will not reset. Resetting PRAM fails. Resetting NVRAM in Open Firmware fails. Resetting PMU fails.
Info:
MacBook Pro, Mac OS X (10.7.3), (MacBook pro 8,1)
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Jan 8, 2011
My macbook pro won't boot past the grey screen, I've tried reseting PRam, running fsck from single user etc to no avail. All signs would point towards a hard disk failure, but the curious thing is that it sometimes mounts in disk utility when booting from the install CD, so theres a little life left in it yet! I have fairly recent backups of most of my files, but there are a couple I've been working on in the past few days that won't be backed up. So my question is this - is it possible to copy files from my mac HD onto a external drive through the terminal/disk utility while booting from the CD.
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Mar 21, 2012
I am running Mac OS Lion (10.7.3) on a 8-core Mac Pro. As I turned on my mac this morning, I found out that I was unable to use my wireless mouse, and also that I couldn't open my bluetooth settings. Apparently, the entire module disappeared from the System Preferences, and when I went to one of the articles on here, I saw that I'm supposed to reset my PRAM and SMC in order to make my bluetooth work again. The problem is, that I don't know what PRAM or SMC are, nor do I know how to reset them.
Info:
Mac Pro (Mid 2010), Mac OS X (10.7.3)
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Jan 20, 2009
I have a 17" Powerbook G4 1.5 GHZ. I lost all sound from one moment to the next. System preferences says Audio output Headphones however no sound from Headphones either. I tried to reset my PRAM, however when I hold down "Option" "Command" "r" and "P" the computer won't restart. The hard drive seems to be stuck at this point and won't go any further. I went to the Apple store and the Genius lost patience and said we should send it out. (I'd rather not)
I have also reset the PMU
Everything else works fine.
I've looked at several other threads and post. Everyone with a sound problem seems to be able to get it resolved with a PRAM reset. However I find nothing on my the problem of not being able to reset..
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Nov 30, 2007
I have tried two different brands of blank CDR in my drive and both times, they fail to mount and in Disk Utility, show up as Sony DVDs (neither of them is a Sony or a DVD), but not writable. I have no problem with media that already has content. I've tried resetting PRAM, but nothing else yet.
Information:
Powermac G5
Mac OS X (10.4.10)
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Feb 25, 2008
I tried the SMC & PRAM reset. Now, there is a delay in my keyboard and mouse. For example as I am writing this, as I type, I am observing a ~1/4 sec delay between me pressing a key and the GUI registering it. The same with the mouse. I can click-and-hold over say File and move it up and down over subsequent menu items and it the GUI doesn't highlight the menu item unless I slow down the movement.
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Aug 15, 2010
Can someone explain to me why resetting PRAM on a machine has any effect whatsoever for networking issues? ie; self assigned ip etc. I have noticed this is a common troubleshooting step that a lot of people are recommending for issues related to networking.
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Jun 29, 2012
When exactly do you need to reset the SMC, PRAM or repair permissions?Â
Info:
iMac, Mac OS X (10.7.3), iMac Late 2009
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Aug 22, 2014
Updated to OS X Mavericks last week. Ever since, it has been experiencing boot problems. Â
- If I restart my Macbook Pro (2011 13", lowest model), it will sit at the grey screen with apple logo and spinning grey wheel forever. I notice that my HDD is NOT running (no clicking / writing sounds)Â
- If I restart with a PRAM reset or holding down option to select Macintosh HD boot, the hard drive starts to run (I can hear it) and it boots successfully... it takes 5+ minutes to boot up. The grey screen with apple logo is presented on my screen for about 4 minutes, then the login screen shows up but I cannot move my mouse or select a login user for 30 seconds. After this, I can log in succesfully.Â
-Also, switching users takes 1+ minutes. Clicking "switch user" freezes my screen.
Info:
Mac Pro
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Apr 9, 2012
When I restart my Mac it chimes several times as if the PRAM is being reset. Could this be telling me my internal battery is dead?
Info:
Mac Pro, Mac OS X (10.6.8), 8 core 9gb RAM
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Jul 19, 2009
I understand the steps needed, but how many times should I reset the PRAM and how many times should I here the startup sound (in total) before releasing the buttons?
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Sep 11, 2009
I attempted to reset the PRAM on my macpro running snow leopard this morning, by rebooting and holding cmd-option-p-r until the apple logo appeared, at which point I released and then machine then rebooted a second time. I went back to the computer about an hour later and it was stuck on the apple logo screen, with no sounds coming from the CPU. I did a hard reboot by holding down the power key and it started up fine. I've never reset the pram before and so I didn't know what I should expect as far as the process being successful, but after an hour stuck on the apple logo I figured it got stuck on something.
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Feb 25, 2006
I have a G4 MDD Dual 1.42ghz, When I hold down the Command-Option-P-R keys during restart it doesnt do anything. It keeps going straight to the gray screen and starts up. I dont know what to do. Anyone know whats the problem? Also my computer cant wake up from sleep or even go to sleep all the way.
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Sep 13, 2009
So I contacted Apple this morning regarding the LCD Backlight Bleed on my iMac (24", early 2008, 2.8 ghz) They made me reset the PRAM, which I figured wouldn't work, and the issue is still there.
They say it'll have to go in for servicing, and I live nowhere near an Apple Store, so they gave me the location of the nearest London Drugs. Am I going to get the same quality of service as I would from an Apple Store? And what is the exact process that they use, do they just replace it with a new LCD?Also, he said that it will be covered under Applecare unless it is ruled as accidental damage, he said that much of the time, the issue is caused by pressure on the back of the case, and that if that was the case, it wouldn't be covered.I can't really see how this would cause it, and I haven't ever put any pressure or anything on the back, but i did buy the iMac used, what are the chances of this being ruled accidental damage?I have the bleed in all four corners of the screen, if that makes any difference.
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Sep 24, 2010
I've got the new i5 mbp which has the right angle magsafe plug. Can I use any older magsafe adapter on the machine?I need 2 more (one for work and one for home), i'm too lazy to take it out of the bag, or I always forget to put it back when I need it.
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Apr 13, 2012
My 17 inch Mac pro laptop just shut down and I can't get it to turn on again. This has happen multiple times over the last six months. Looked through the forum and tried removing the battery and resetting the SMC control to no avail. I was having issues also with the screen a month ago but that resolved by itself. When I took it into the genius bar for screen problems I was told I'd probably need a new CPU board because the vram may be going bad and they just don't fix that problem. Have held off because of a potential $500 repair and awaiting ivy bridge technology. How I can restart my portable. Right now you turn on the machine and the front light stays on for 2 sec and you hear the machine click off?
Info:
MacBook Pro, Mac OS X (10.6.6)
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Aug 24, 2014
I have been trying hard to reboot my system macbook pro and tried every possible ways through disk utility set up but with no avail. I have a system back up on my external drive. when I run a disk repair I get a error massage disk cannot be repaired and says back up and reformat the disk. I tried erasing the disk and reinstall from my back up drive but cannot erase the drive and reinstall either and get a error. i tried to reinstall online from the apple server but I could not find the destination drive on my Mac. I tried to erase the drive using zero recovery but it took me more then 24 hours and keeps running and alto marly I have to stop it.
Info:
MacBook Pro, OS X Mavericks (10.9.1)
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Oct 12, 2010
I have had my new MBP a week now. Still learning. Having a real hard time setting up my e-mail. Fist loaded up my OPTONLINE acct. and that didn't work so I deleted that acct. Then loaded up my YAHOO acct. and that didn't work. I deleted that also. Then I went and got a new GMAIL acct. the mail program seems to access this acct but keeps asking for my password. I can access gmail from the web with no problem, so my password is correct. What am I doing wrong? I tried shutting down and restarted to no avail. I didn't set the setting in this program it did it automaticly.
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Oct 19, 2010
I have the impression that my MBP still charges when the power lead is hooked into my macbook. Is that true? Do i have to unplug the power cord each time my macbook is charged? Is there any way that the battery life might be affected?
I hope there is some sort of a circuit involved, that stops charging the battery when the battery is full, rather than overcharging it..
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