IMac won't turn on

I am having a problem with my iMac: After it is shut down, it will not turn on for about a day or so. It is a 2006, so it's out of warranty.
Any idea what the source of this problem might be before I take it in to be fixed?

Welcome to Apple Discussions.
Sorry to hear about the problem. Do you hear any noise at all when you try to turn it on and is anything displayed on the screen?
If the computer is totally silent that points to a power issue, you could try plugging it into another outlet just in case it's a power issue where it's plugged in. If that doesn't work then it's pointing to power supply issue and you will need to bring it in for service. You can use this site to locate the closest Apple Authorized Service Provider.
Regards,
Roger

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You've (unfortunately) joined the growing list of users that are having problems with their iMac. Mine was purchased in September 2007 and I went through two bad ones before I finally kept one until last week.
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I have a 24" iMac (white), that I bought around 2008. I haven't had any issues with it until recently. It's been really finnicky. At times it would just not turn on, and after waiting patiently for a day or so, it would then turn on. Being too busy to take it in, I ignored the issue. This was a few months ago.
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Reset the SMC:
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
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Thanks, Marcus

monkeyhihi1 wrote:
G5 Intel iMac (Late 2006) Mac OS X (10.6.4)
No such animal... it is either a G5 or an Intel. If it's running 10.6.4 it must be Intel.
Just recently (this night,) whenever I would unplug my main USB hub, my iMac (Late 2006) would turn off ... The last time this happened, (the 4th time,) the iMac wouldn't turn back on at all.
Hard shutdowns can damage both hardware and software.
I was working on a VERY important school assignment at the time, (cliche, I know,) so is there any way I can connect another computer to my iMac so I can get my school assignment off of it?
Only if it will boot intoFirewire target disk mode.Have you tried booting from your 10.6 Install Disk, holding the "c" key?
Have you tried starting in single user mode. If that works, at the prompt type *fsck -fy* remember to leave a blank space before the "-fy".
This will run a file system check, like Repair Disk and repair any problems if it can. If you run into errors run fsck multiple times until it reports OK. Then, type reboot to restart to OS X.
-mj

IMac won't turn on...............PLEASE REPLY!!!!!!

My iMac will NOT turn on. I've done everything. Disconnected power cord for a couple days, and it didn't work after trying to start it up. Took out all things connected to it - mouse, keyboard, printer, iPod, internet cord. WHen i press the power button in the back nothing happens whatsoever --> no fan, no sounds, nothing. Any reply is helpful. Thanks.

Hello iMoney
1. Test the wall outlet or try another wall outlet in a different part of the house!
2. Try another power cord (a standard PC power cord will work) for testing!
3. Take it to the nearest Apple Store or Apple Service provider for service!
http://www.apple.com/buy/locator/service/
Dennis

My 2012 iMac won't turn on. No response at all

My iMac will not respond what's so ever to the power button. I have no idea what to do

Hesitate to even suggest this, but the electric plug at the back of the iMac has been known to come loose. Make sure it's in solid.
Reason I even suggest this is my GF called the other day, said her iMac wouldn't turn on. I told her to check the plug and that fixed it.
If you've already done that please ignore all this.

27" i7 iMac Won't Turn On (or when it does, it has taken at least 15mins)

Performed a search and did not come up with power issues regarding the new iMacs.
Mine does not turn on immediately upon pushing a power button.
It took about 10 to 15 minutes yesterday when I turned on for the very first time. This morning, powering on for the first time after turning off the unit at the end of the evening, it has been over 30 minutes and still nothing.
The unit is receiving power, however, and when I put my ear near the unit I can hear the HDD trying to start (sounds like a lawn mower not starting after pulling a starter cord - though obviously much quieter than that). This is confirmed by attaching a USB external drive that does the same thing.
Once it's on, there were absolutely no issues with the machine.
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Anyone experiencing similar issues?

Since posting this thread, I noticed that there are a few more DOA iMac threads popping up. Loose RAM enclosure is an interesting take. I did make sure the screws are tight, but in my particular case, I can hear the hard drive repeatedly trying to start and then stop. The fans come on together with the drive as I feel a whiff of air when I put my hand close to the top vent.
The fact that the machine eventually turns on and the operation during that time has no problems, I figure it's purely a power issue in my case.
Unfortunately, this particular issue for me will remain unresolved as Apple Rep I spoke with this morning and I have decided it's best to send the unit back.
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IMac won't turn on after scheduled shut down

Hi, hope someone here can help me!
I have a 20" 2006 iMac. While it was still under warranty, it repeatedly froze, and eventually when I turned it on the screen remained blank although I could hear that the hard drive was at least trying to get started. I got it repaired (new logic board, new screen), but now I am having some of the other difficulties mentioned here, where the screen freezes when using graphic intense software, including 3D games. Sometimes, it works fine for hours, others less than 2 minutes. I used to keep it on all the time, with energy saver set to go to sleep when possible. I've found, though that the graphics problems are less likely to happen if it has been off at least overnight, so I set up the schedule for it to turn itself off in the small hours. The problem is, when I go to turn it back on, it won't come on unless i pull out the power cable from the back of it and put it back in again. Any ideas what's causing this? And any ideas on what I can do to fix it?
Thanks

This just happened to me today. Not sure what to do as yours was the only discussion like this.
Please let me know if you were able to restore it and how?
Extremely frustrated since it was brand spankin new!!

IMac won't turn on

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