Turn on! My mac won't turn on after sleeping!

Ever had a problem where your computer won't turn on after sleeping for a few minutes? (I've discovered that too many downloads cause this) Anyway... have you ever tried pushing the power button for one second? Try it! It's been working for me! Hope this helped!
(If it still won't turn on, try typing in letters randomly for one minute. Just type anything like: asdjhas)

Try resetting the SMC and PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM

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Mac won't wake up after sleep

When I leave my macbook pro unattended for a whie and come back to use it, the screen is dark (per screen saver) but I just can't wake it up. I have moved my fingers across the trackpad and pressed keyboard keys without any success. Every time, I need to restart Mac OS Lion.

expanding on my post yesterday it appears that ML puts the whole system into a deep sleep: when I returned to system this morning all was silent, no fans running, no disks turning. After pressing power button briefly, iMac woke up but wireless KB and trackpad were dead until I pressed connection button on trackpad. Message was displayed saying that connections to NAS RAID drive were lost 'ignore or disconnect' - I did nothing and this message disappeared. Finded showed no Shares at all. Firewire drive used for Time Machine (and others) then awoke and Time Machine briefly turned. Then a NAS Raid drive came to life on its own and, after a few minutes, Finder showed Sharing and then displayed the NAS - I clicked on NAS which displayed its partitions and then clicked on each individually to connect.
After all that, everything again seems as normal, but the above took around 10 minutes to achieve.
Energy Saver Settings are as below - unchanged since before ML (by me anyway)
I anticipate this whole procedure will repeat if I leave the system for an hour or so.
I shall next try changing Energy Saver settings by un-ticking the 'put disks to sleep' option.

Today my mac won't turn on at all...the light at the front is remaining on and at a constant brightness however the screen is still black! I'm not sure what to do next?

today my mac won't turn on at all...the light at the front is remaining on and at a constant brightness however the screen is still black! I'm not sure what to do next?

If you can log in blindly or using the flashlight method, it is possible your screen brightness somehow got set all the way to nothing. I don't have my Macbook with me right now to test it out but I believe it may not be possible to adjust the brightness at the log-in screen so you have to be able to log in first (though I could be wrong on that).

TS1713 Mac won't turn on.

Mac won't turn on, it's plugged in

Look at the steps in this Apple support article:
http://support.apple.com/kb/TS1367?viewlocale=en_US
Ciao.

My mac won't turn on

My mac won't turn on and I want to try and back up my files in case it needs to be reformatted. Is this possible if it won't turn on?

See this Apple note on systems that won't power up. If the system won't power on, the only way to backup your files is to remove the hard drive from the system, and either put it into a case or attach a cable so another system can read it.

My mac won't turn on. It has the apple sign but a little loading sign under it, for about an hour

My mac won't turn on. It has the apple sign but a little loading sign under it, for about an hour

Will it boot up in safe mode?
http://support.apple.com/kb/ph11212
or can you enter single-user mode?
https://support.apple.com/kb/ht1492
What version of OSX are you running?

My Mac won't turn back on after I updated the software

My Mac won't turn on

Pull your hard drives.
Put in your OEM DVD
Hold down the letter d on startup and run Apple Hardware Test
Put in your latest OS X DVD and hold c
Does it do both.
Oh, and Reset SMC.
http://www.apple.com/support/macpro
And make sure you have backups, bootable backups, and just WHAT version OS X?? what update(s)?
.... we are not going to know.... Lion? 10.6.8?

Installed Yosemite...Mac won't turn off.

Installed yosemite, now my mac won’t turn off completely. All apps are off. After choosing shut down, It doesn’t shut the white light. It looks like it’s in power down mode. But nothing will turn it back on except having to hold down the power button to completely turn it off in Yosemite. then pressing it again to turn it back on. Help!!!!

LRD777 wrote:
Installed yosemite, now my mac won’t turn off completely. All apps are off. After choosing shut down, It doesn’t shut the white light. It looks like it’s in power down mode. But nothing will turn it back on except having to hold down the power button to completely turn it off in Yosemite. then pressing it again to turn it back on. Help!!!!

'HP OFficejet Pro L7680 turned itself off and won't turn back on'

HP OFficejet Pro L7680 turned itself off and won't turn back on.
This question was solved.
View Solution.

Hello untech,
I see that it has been awhile since you have posted with us on the HP Forums. Please let me take a moment to say "Welcome Back".
I see that you are having an issue with the printer shutting it self off and not powering back on.
By chance do you have the printer power cable connected to a power bar/strip? If so, please try connecting the printers power cable directly to a wall outlet. Here is a document that explains the Issues when Connected to an Uninterruptible Power Supply/Power Strip/Surge Protector.
The printer in the document is a LaserJet printer but this document is meant for HP products in general and only uses the LaserJet as an example.
I am also going to include a document for when The HP Printer Won't Turn On or Respond When the Power Button is Pressed.
If by chance the issue is not resolved after doing the steps outlined, I would then suggest calling HP's Technical Support to see about further options for you. If you are calling within North America, the number is 1-800-474-6836 and for all other regions, click here: click here.
Please feel free to write me back if you have any other questions.
I hope you have a great Monday.
Cheers,
Click the “Kudos Thumbs Up" at the bottom of this post to say “Thanks” for helping!
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
W a t e r b o y 71
I work on behalf of HP

My iPhone 4s turned itself off and won't turn back on. What do I do?

My iPhone 4s turned itself off and won't turn back on. What do I do?

Thanks for your help. I tried plugging it in but nothing happened, I actually still had battery power left. I was able to solve my problem by holding down the power and home buttons, which reset the phone and got it started again.
Thanks for trying

My iPhone 5 was in 50% battery life when it just turned off and it won't turn on and when i plug it to my computer itunes wont recognize it and i cant turn it on

My iPhone 5 was in 50% battery life when it just turned off and it won't turn on and when i plug it to my computer itunes wont recognize it and i cant turn it on

try a reset

Iphone 4 turns off randomly and won't turn back on unless it's plugged in

Iphone 4 turns off randomly and won't turn back on unless it's plugged in.
Has anyone had this problem?
If I leave the phone (thus not doing anything to it) for an extended period of time say 2 hrs. It will have turned off and you can't turn it back on unless you plug it in, but it's got heaps of "Battery" left.
Ever so often it will turn off randomly as well, and can't turn it on again.

If your iPhone is powering off, this is not normal.
Try restoring your iPhone with iTunes as a new iPhone or not from your iPhone's backup. If no change after doing so, your iPhone has a hardware problem. The iPhone includes a one year warranty.

My I phone5c has turned itself off and won't turn back on,have only had it 3 weeks,any ideas anyone?

My iPhone 5c has turned itself off and won't turn back on, any ideas anyone?

Hey Jswalker1969,
Thanks for the question. If your iPhone is not powering on, see the following troubleshooting steps:
Will not turn on, will not turn on unless connected to power, or unexpected power off
1. Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
2. Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion.
Learn about LCIs and corrosion.
3. Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
4. After at least 30 minutes, if:
               - The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen. Then unplug the phone from power. If it immediately turns off, seek service.
               - The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
               - Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
5. If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
               - If the display turns on, go to step 4.
               - If the display remains black, go to next step.
6. Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
7. If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
My issue is still not resolved. What do I do next?
Contact Apple Support.
For additional information, see this article:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/TS2802
Thanks,
Matt M.

My mac won't wake up from sleep, what can i do

My mac won't wake up from sleep, what can i do

Can you say more about thermal cut-off? My mac has beene having problems waking from sleep and I have noticed that I hear the fan running ever so slightly in the background. When I depress the power button for a second the fan shuts off.
Just open the side an dlook to see which fan it is. The lower fands are easy to see as well as the video card fan.
When you push the power button and that fan goes off is the machine now fully off? No power light? No fans spinning? Now drives spinning?
I don't recall what I did when my machine shut off with the one exhaust fan running. I think the obvious thing I would have tried would have been to push power button for 10 seconds to shut it down fully. That or actually pull the plug.
When this happens the only way to use my Mac is to restart via the power button.
Then I guess that answers the first question. It must have turned off since pushing the power button again was the normal reboot.
I can't find any helpful info on thermal cut-off so I was wondering if you could explain what it is, what causes it, and more importantly what I can do to fix it?
That was my term for it. What else could it be? Without its fan video card would get extremely hot and throw off all that heat. Whats the point of having temperature sensors in so many places other than to use that info to protect the machine against damage due to overheating? So my assumption was card gets hot, sensor (probably the pci slot 1 temperature sensor) senses it, kills the machine. It's also seems logical to me that the circuit(s) handling temperature overloads would want to keep a exhaust fan running to dump the heat out of the machine to further protect any damage from the heat.

Mac won't re-start after going to sleep

Since installing a new version of FaxstfPro (version 10.7), my MAC won't re-start after going to sleep. I have to re-boot to get the system started again.
Thanks for any ideas on how to re-store the sleep fucntion.

Thanks for the excellent tip. From reading the bluetooth advisories, I realized that my D-link was incorrectly installed in a UBS hub. Moving it to a direct UBS port resolved the problem.
During the trouble shooting process, I found that I do not have a Bluetooth setup assistant. I have recently installed OS X 10.4.6 and also applied the Bluetooth firmware update, but I can not find the Bluetooth setup assistant in Utilites, and a search via Finder didn't locate it either. And I can't find the software in the .Mac downloads.
Any suggestions on how to restore the assistant?

Acrobat Pro for Mac won't start, even after restarting the machine. Any suggestions?

Acrobat Pro for Mac won't start, even after restarting the machine. Any suggestions?

Hi Patrick,
Can you please mention the version of Adobe Acrobat that you are using and on what OS version. Also mention whether this problem has started recently and was running fine earlier or is it a fresh install and has never worked for you.
Have you tried uninstalling and reinstalling the product after you started facing this issue.
-Shashi

Turn on! My mac won't turn on after sleeping!

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