My mac won't power up?

When I woke up today - my mac had shut itself down for some reason. it will not start. nothing happens when i push the power button. i tried the 2 suggestions in the user manual and still have not had success. i have tried it in different outlets - etc. i removed the memory and put it back in...i unplugged it and held the power button for 5 seconds...nothing. is there something else i can try before i pack it up and head to an apple store?
Message was edited by: Chris Zampogna

If resetting your SMC does not work, I'm afraid you will need to get it looked at. Your power inverter may have took a dump.
Dave M.
 MacOSG: An Apple User Group  iTunes: MacOSG Podcast  Follow us on Twitter: MacOSG

Similar Messages

Mac won't power on. How do I fix?, Mac won't power on. How do I fix?

My Mac wont power on. How do I fix it. Mac is only a month old.

Contact Apple Service, iMac Service or Apple's Express Lane. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine. Might also apply to new machines the first 90 days. BTW, the AppleCare Protection Plan's the best insurance policy available for desktop machines. Get it if you don't have it before contacting Apple.

Mac won't power up after trying Leopard install. Black screen of death.

After trying to install an upgrade from Tiger, the installer said that if I wanted to continue, it would install a new volume and erase all my data. That sounded bad, so I hit cancel and chose quit installer from the menu bar. My mac asked which OS I wanted to use to restart my computer, and naturally I chose Tiger, not Leopard. My mac tried to restart and I got the apple logo and the little wheel spinning and then...off. Shut Down. Happens every time I hit the power button. Logo, wheel, off. I was on the phone with apple support for 2 hours and they sent me to a store finally. There they said it was a problem with file corruption on my computer. Not Leopard. They said they were having no problems with Leopard except for people trying to install it on an older model and similar issues. HELP!

This doesn't sound good at all . . .
Did the Apple store test your power supply? It would be good
to know that the basic hardware functions properly.
And did you try booting from your Tiger install DVD? Assuming
you can get this far, run Disk Utility from the DVD and check the
disk - if it finds bad stuff on your disk, and can't fix it, you
probably do have a corrupted disk. The only solution may be to
reformat the disk - hope you had a backup copy . . .
A big guess on my part is this happened when you hit Cancel on
the install.
If you have Apple Care (and everyone with a laptop should have
it), take it to the store, and let them fix it. You'll have a
nice, clean 10.4.10 on it (or Leopard if you want), and you can
start over . . . :^(
Good luck . . .

Swollen battery, now Mac won't power up

My battery is swelling and I had resigned myself to working tethered until I HAD to purchase a new one. Last nite, my infant grandson yanked out the power cord and now I can't power back on. I get the green light on the AC adapter, and had always assumed that I could run the computer just from that source without the battery. Am I wrong or could the sudden disconnect possibly have tripped something that now prevents me from powering back up? Any one experience similar troubles?
Teemflmngo

You should be able to run the MBP just from the power adaptor. You could have some directory corruption from the abrupt shutdown. See if you can boot from your install disc. If you can, navigate to Disk Utility and repair your boot disk and try again.
Have you removed the swelling battery? You need to--otherwise it can exert pressure inside the machine and potentially cause damage.
Here's a link that might be helpful:
http://support.apple.com/kb/TS1365
Good luck!

Mac won't shut down, gets stuck at empty desktop.

When I shut down, even after quitting all applications, desktop gets cleared of icons, dock remains, and that's it, my Mac won't power off. I have to force shut down 99% of the time. I had the same problem even before the Yosemite update. The Mac is only 5 months old.
MacBook Pro (13-inch, Mid 2012)
Processor: 2.5 GHz Intel Core i5
Memory: 4 GB 1600 MHz DDR3
Graphics: Intel HD Graphics 4000 1024 MB
OS X Yosemite 10.10

Note the time during the "bad" shutdown. After rebooting open the Console app that is in the Utilities folder and look for log entries at the time of the problem. Post suspicious ones here

OS10.5.1 - EyeTV2.5.1 won't power on Mac to record

I was running OS10.3.9 with EyeTV 1.8.5 with the 410 hardware.
I would program a recording overnight, and power off the mac.
The EyeTv software would power on the Mac and the recording would be done.
I'd have the mac setup to power down after the recording had finished.
All worked well. Never any problems.
I upgraded to OS 10.5; (now OS10.5.1); and upgraded to EyeTV 2.5.1. EyeTV 2.5.1 works well, and I can program a recording which will happen provided the Mac is already powered on.
My problem is that EyeTv 2.5.1 won't always power up the mac, if it is powered off, to preform a recording overnight. For some odd reason, it has worked on some occassions but not on others. (This was also true of OS 10.
*Is anyone else experiencing this?*
I contacted Elgato support, who advised the following:
- Repair Premissions: I've now done this several times.
- Refresh EyeTV Helper: I've done this several times.
- Erase old EyeTV Preferences: I've done this several times.
- I've also done the above in various combinations.
- Reset your PRAM: I've done this once.
- And I checked all the firewire connections which are fine.
And of course everytime I delete the preferences I have to set EyeTV up again which is annoying.
As is constantly doing the above, sometimes with success, mostly without.
I contacted Elgato again and asked if they could advise on anyway I could track down what was happening. They replied as follows:
"EyeTV 2.5.1 has been thoroughly tested with Mac OS 10.5. I don;t know if testing has been completed with Mac OS 10.5.1.
EyeTV writes to the Power Manager when a schedule is created. The Power Manager is a file that tells the Mac OS when to turn on for certain tasks. Unfortunately there is no way to read what is in the Power Manager."
I'm out of ideas. *Can anyone suggest what I could try to resolve this problem?*
Thanks all.

freighterman wrote:
Why not just put system to sleep if you have a scheduled recording?
A fair question. The last time I put OS10.5.1 to sleep I couldn't get it to wake up. No response at all. I had to power down, then power on again. And to be honest, EyeTV should power on the system to do a recording, it's in their manual. We shouldn't have to be coming up with work arounds.
I never turn off my system...it goes to sleep when I do, or when I'm out of the house.
My usage is different. I power down overnight and when I'm out.

Power mac G5 2004 won't power on

Hello all,
my Power mac G5 June 2004, won't power on at all. I've changed the logic board, power supply, dual processors, front panel board, and front panel board cable. Still getting the same results. The only thing I could think of next is the power button.
Please help!!!
M-One

m-one
No more wise guy stuff then.
If you have tried and thus eliminated everything else, then perhaps it is indeed the power button.
However, are you perfectly certain that it can be nothing else? Were all of the parts that you used for troubleshooting purposes from some other Mac or from some kit or did you purchase them or what?
Sometimes it can be more than one thing. And at different times. I am not sure exactly what the minimum configuration for a boot-up is but perhaps search for that and see what pops up. Reduce it to that and try it.
If you have a working Mac from which these replacement parts are coming it is not high on my list of favorite strategies but you can try plugging the suspect components into the working Mac one at a time until you find the culprit.
Are there any parts that you replace that require you to press the SMU reset although you have done it once? Perhaps a call to Apple or again search on that for suggestions.
Luck-
-DaddyPaycheck

Mac won't boot after power chord became unplugged accidently.

Mac won't boot after power chord became unplugged accidently.
I have a Mac Mini running very latest version of OSX. I was making a recording with QuickTime; when I needed to plug in a USB recording device into the back of the Mac Mini, as I pulled the Mac off my shelf to do this, the power cable came out and the Mac lost power.
I plugged it back in and powered up the Mac. I get the grey screen with Apple logo and the spinning grey wheel; then it goes to a blue screen (as usual) and I get the "starting OSX..." progress bar. When the progress bar finishes, I'm left with a blue screen only, no dock, no apple icon at top left, nothing across the top, no nothing.
So far, I've booted from the original disc and repaired the permissions as well as the disc, then re-booted, but same old blue screen.
I have another iMac G5 machine, so is there any way I can at least retrieve the important HD files from the Mac Mini to my G5, before throwing the broken Mac Mini away?
Can anyone advise please?

Hi, Nigel.
Not to differ with my colleagues here, but there's an important question that wasn't asked.
1. You wrote: "So far, I've booted from the original disc and repaired the permissions as well as the disc, then re-booted, but same old blue screen."Did Disk Utility report any errors it could not fix when you ran Repair Disk? I suggest you run the procedure specified in my "Resolving Disk, Permission, and Cache Corruption" FAQ. Perform the steps therein in the order specified.
2. You may also want to run the Apple Hardware Test that came with your Mini to be sure nothing shorted when the power cable was removed from the computer. I've seen it happen, hence I usually recommend removing the power cable at the wall before disconnecting the power cable from the computer. See my "Apple Hardware Test" FAQ.
3. Repair Disk gives your Mini a clean bill of health, the blue screen may be the result of some Startup or Login item that was corrupted due to the sudden power outage. My "Troubleshooting Startup and Login Items" FAQ can help you pin that down if such an item is causing the problem and may help you avoid and Archive and Install.
4. If you elect to go the Archive and Install route, see my "General advice on performing an Archive and Install" FAQ for some important tips on this process.
5. As FYI, this is the kind of problem that makes one glad they've implemented a comprehensive backup and recovery solution. For advice on the backup and recovery solution I employ, see my "Backup and Recovery" FAQ. Computing without a comprehensive backup and recovery solution is like driving without auto insurance.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

My mac won't wake up from a sleep and I have to unplug it to reboot as the power button doesn't function as well. Any suggestions? Running Lion 10.7.4 and sending all reports in.

My mac won't wake up from a sleep and I have to unplug it to reboot as the power button doesn't function as well. Any suggestions? Running Lion 10.7.4 and sending all reports in to Apple.

First things first:
Update your profile (equipent, OSX, etc)
In Lion MS office2004 is not compatible, are you stIll using it?
Do the SMC RESET and do the PRAM reset.

TS1367 I upgraded my cpu but when i start my mac pro it won't power on. I put back the original cpu, but still, it won't power on? What is wrong?

M y mac pro won't power on. I upgraded my cpu, try putting bac k the original cpu but still it won't power on, what is wrong with my mac pro?
Shear

Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

My Mac won't fully start up.. I push the power button, the apple sign pops up and the loading circle and then a bar loading and as soon as the bar is done loading the computer cuts off again. It's like it attempts to start up like it's updating something

My Mac won't fully start up.. I push the power button, the apple sign pops up and the loading circle and then a bar loading and as soon as the bar is done loading the computer cuts off again. It's like it attempts to start up like it's updating something and then after the bar is full, it shuts off. Please help

Hpullen wrote:
A1278 and I'm not sure about the OSX
http://support.apple.com/kb/HT4132 How to identify MacBook Pro models
http://support.apple.com/kb/HT1159 Mac OS X versions (builds) for computers

Mac mini won't power up, any suggestions

My Mac mini won't power up for more than a couple of seconds, I've tried disconnecting the power supply for 24 hours and it still won't power up. Any suggestions?

I just fixed mine today after 3 previous failed attempts to fix. While this probably will not be your solution, it is worth a shot. I too had a board that would not power, NOTHING. With a volt meter I could confirm that the Power Supply was good, and was also delivering voltage to the Mother Board at the connector.
The root cause in my situation:
The SMC reset button on the Mother Board was stuck in the depressed position (i.e. a short).
The Fix:
Pry SMC Reset button off the board with a very tiny screw driver or other such tool. It cleanly popped off the board.
The pads will remain, allowing you to still reset SMC in future if needed by just shorting them the old fashion way.

Power mac g4 Model 8570 won't power on

A few months ago I installed Leopard on my g4 tower and since then I've been having power problems. I realized I pulled the wrong power cord in when I set everything back up, so I figured that waws the problem, thinking it was an issue of not drawing enough power; however, the problem has persisted. It used to be that I'd have to press the power button a couple of times for it to really take, then it was taking longer and longer to make that happen. Now it just won't power on at all. We popped the battery out for a bit, unplugged everything, and then re-assembled it but that didn't work. I keep reading about a pmu button or something, but I don't see anything like that and none of the diagrams on here match my logic board. can any one suggest what I can try? does my model even have a pmu button? I'm not that seasoned at trouble-shooting the hardware so any suggestions would be welcome.

Thanks so much, this was incredibly helpful! Unfortunately it didn't fix the problem tho. Is there anything else you would suggest I try before replacing the battery? I want to try all options before having to buy a new battery, and also whatever I can do before having to take it in somewhere (not having a car makes that a difficult task). Thanks again!

Please Help! My iPhone 4 won't power on!

iPhone 4, out of warranty coverage, won't power on.
    1.    It has about 60% battery before it dead, but suddenly it became black screen and not responsive (like powered off).
    2.    Whatever I did, like "holding the power button and home button together for 10-25 sec and then pressing the power button again" etc. it just won't power on, no Apple logo!
    3.    But I can seen the "emergancy call" screen when I plugged it with my laptop and it just told me "No Service" at the upper left corner (status bar of iPhone 4).
    4.    iTunes can see it, but only when it was in Recovery mode or DFU mode.
    5.    I also tried to restore it to factory settings in iTunes, but it always gives me an error with various error codes, like 2001, 2006, etc. I also tried restore it under Windows or Mac, but was out of luck too!
    6.    Finally I bought a iPhone 4 battery replacement and replaced the old one with the new one, but nothing changed as if it wasn't replaced its original battery.
    7.    It keeps rebooting at every 10 min or so when It was plugged into my laptop without any operations (pressing any buttons).
    8.    It can be "powered on" only when it was plugged into a computer. It will IMMEDIATELY be in "dead mode" as long as I disconnect it from the computer (like taking out a battery from an iPhone that is powered on)!
    9.    Everything worked fine before it dead, I don't know what happened to it! I am so frustrated!
Please help! Thank you so much!

USB Problem, possibly bad Cable.
I misread your original post "It keeps rebooting at every 10 min or so when It was plugged into my laptop".
I thought you had a boot loop problem, but you say "rebooting when plugged into laptop" this is not the typical boot loop problem, because you had the iPhone connected to laptop.
Connected by what, obvioulsy a USB Cable, Error 2006, is most often due to faulty USB Cable.
Clean that Dock Port Very Well especially with Isopropyll Alcohol, get a good USB Cable, try a different USB port on computer, or try a different computer.

Nano won't power on, but shows up in My Computer and iTunes

I recently replaced the screen in my Nano and for about a day it worked fine. Then I opened it back up to clean off a smudge and now it's slightly less than functional.
First off before anyone asks, I use a PC, not a Mac. I run Windows XP Home Edition. And my iTunes version is 6.0.4.2.
Now my problem...
When not connected to my computer the device is useless, it won't power on, the wheel is unresponsive, no sound comes from the headphones, it's dead.
But when I connect it to my computer it shows up in My Computer and in iTunes and all of my songs show up and I can double click them and play them, but the screen on the Nano still remains dark and the wheel still does nothing.
Another strange thing is that My Computer and iTunes will only recognize it when I turn "hold" on. If hold is off it refuses to show up at all.
I downloaded the latest iPod software and it stopped showing up at all, so I uninstalled that and reverted back to whatever version I have now. I've tried to let it charge for 24 hours, that did nothing. I formatted it and let my computer re-install it's system files and what-not, that did nothing. I've tried to reset it, nothing. And I've mashed all the buttons and circled around the wheel endlessly to no avail.
I really have no clue what might have caused this or how to fix it, if anyone has any suggestions I'm willing to try them, because at this point it can't get that much more broken.
So um, thanks for any help. If anyone actually manages to help me fix this thing and you have a PayPal account I'll toss you like $20 or something for your time, because it's cheaper than buying a new Nano.
Custom PC Windows XP Intel Celeron D 320 (2.4Ghz @ 2.53) 1GB PC3700 (Dual Channel) WD Caviar SE (250 GB, 100 MB/s, 8 MB)

I recently replaced the screen in my Nano and for about a day it worked fine. Then I opened it back up to clean off a smudge and now it's slightly less than functional. <<</div>
Wow. I have no idea, I have never opened my ipod to do any do-it-yourself repairs. Of course (as you probably already know) your warranty is now voided since you opened it up and made alterations to it.
I wouldn't know where to start troubleshooting this, as I am unclear as to the cause of the issue.

My mac won't power up?

Similar Messages

Maybe you are looking for