My iMac don't start up properly

I Don't know what exactly happen to my iMac. But, it will start up then display spinning wheel with loading bar below which first time I seen. I try to resolved this issue by myself by use disk utilies. When I was done with disk utilies, I restart it. Then it do same thing but this time, went black and shut down. I unable to get further than this point.
I suspect that it occur when I accident use webcomic as wallpaper. Reason is that I can't change wallpaper until I restart. Which start loading bar issue.
I did scan for any possible spyware or virus, it come clean.
Message was edited by: Marc Richards

back with more bad news, It failed to load up, stuck in spinning whell for long time. I repeat method for 3 time now. it still not load.
My guess that my iMac has hardware failure.
Message was edited by: Marc Richards

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My iMac won't start up properly, it powers on the bong sound happens and then the little gear spins forever

My iMac won't start up properly, it powers on the bong sound happens and then the little gear spins forever
ive tried booting from my leapord disk
smc reset
pram reset
and safe boot

Please carefully read Apple's advice letter Gray screen appears during startup for troubleshooting steps.

Imac don't start up

I have completely re-installed Snow on my imac hd after I guid partioned the imac hd (so all data on the hd was gone). With the installation of Snow I have copied my users, programs and settings from an hd. Everything runs fine. After the installation I work 2 minutes on the comp and than turn it off....turn it on again and it starts up....now I work 30 minutes on the imac and turn it of, come back...turn it on and the imac does not start up anymore...in the 30 minutes I worked on the imac, in the background I hear the mac working and something creates the situation that the imac does not start up anymore after turning off. I have to re-install snow and than I can work with my mac again...but the moment I turn it of, the mac doesn't start up when I swith it on...I get a round sign with a stripe and a running circle below showing that the start up is stuck...
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Try unplugging it and disconnect any other cables and leave it that way for a while and then reconnect everything and see if it starts. If it doesn't, or if it keeps shutting down or rebooting on its own, it may have a bad power supply, in which case it will need repair or replacement. All new iMacs have a one year warranty, so if you bought it six months ago you should still be covered.

My iMac won't start up properly

i let my computer sleep. after 30 min it's shot down itself. when i turn on. it will start, but when the window appear while the sound came up it shut it down or restart again, even before I log in.   some time when it was sleeping mood same thing happen. and it is happen again and again. about two weeks now. I am really warring about my iMac. I don't know see if it hardware or software. so please help me , thanks

Reinstall OS X.
Reinstalling OS X Without Erasing the 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 the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Also see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
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                 if possible because it is three times faster than wireless.

IMac won't start up properly

Recently, one of my school's iMac's broke down and the IT guy was brought in to fix it. It ran smoothly for a bit but then started freezing, then not even being able to reach the login screen. It will take up to sometimes exesses of an hour to finish the white screen with the apple on it bit. Then it will go blue, and won't load anything after that.
Just wondering if there is anything I can do to solve this.
Thanks,
Ross

My iMac is doing the same thing, started the day I downloaded the first update for leopard. No one can figure out what's going on except I have no hardware problems it just can no longer find os to boot up on. Leopard has killed my computer and many others and it seems because some people have complained wrongly apple is not going to step up and repair the damage done by there software. And ore intel macs like my g4 iMac really get crashed at least the new macs stay up enough to uninstall leopard.

Help! imac won't start up properly

I recently purchased a new macbook and yesterday I transfered all my data from my old imac g5 to my new macbook using the migration manager program. I have been using my macbook sucesfully ever since, but now whenever i try to turn on the g5 I get an error message along with a power symbol that says "you need to restart your computer. Hold down the power button for several seconds or press the restart button" I'm very concerned and really can't loose data from this old computer. I've tried restarting the computer many times, and unplugging it as well as unplugging all the attached cords. Nothing works. Please help.
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Thanks so much for your help!
Message was edited by: allyp

To Apple Discussions!
"I get an error message along with a power symbol that says "you need to restart your computer."
Is this what you are seeing?
If so, you are having what is known as a kernel panic - What is a kernel panic? (Mac OS X)
Other info to review:
http://docs.info.apple.com/article.html?artnum=106805 Mac OS X: "Broken folder" icon, prohibitory sign, or *kernel panic* when computer starts
User Tips: Kernel Panics
You won't lose any info from starting from your System Install DVD. However, most people here recommend that you always have a backup.

IMac G5 wont start up properly, nothing comes up on screen

Hi, my iMac starts up and nothing comes up on the screen. Then the fan kicks in to high gear and stays that way. How can i fix this problem?

Try starting from your install disk and using Disk Utility
1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk.
Try resetting the SMU and the PRAM and let us know how you make out.

I have uninstalled windows but now my imac doesn't start up properly

After experimenting with boot camp I have removed windows and repartitioned my hard drive. Every time I start my mac up now I have to hold the option button and select macintosh otherwise the screen goes into a kind of ms dos mode and says "No bootable device - insert boot device and press any key."

you still have to go into System Preferences => Startup Disk control panel to set the default boot volume

Imac G5 wont start up all the way

Hi i have an Imac G5 iSight and recently it would not start up properly. After a day or two without usage it became very slow and laggy when i tried to reuse it, so then i just manually shut it off. i then rebooted it and a flashing folder appeared (this isnt the first time ive seen the folder) then i just shut it off and let it sit there for about a day, after that i turned it on and it would send me to the greyish screen as usual with the apple logo on it with a loading bar at the bottom this time. the loading bar would barely fill up and then if would just shut itself off. Could anybody please help me with my situation?
P.S. - i tried holding the comm+opt+pr thing as well as holding the C button down when booting up. its also running Snow Leopard

First, if you're running Snow Leopard, you ave an Intel-based iMac, and not a PPC based G5 iSight iMac. The late 2006 iMacs look similar to the iSight iMacs.
Here are some items to try:
Run Disk Utility to Repair the Hard Drive and Repair Disk Permissions
Place your original, came with the iMac when purchased install disk, into the optical drive slot on the iMac. Restart the computer. Immediately press and hold the C key. (If you have upgraded your OS from when you purchased your iMac, example your iMac came with OS 10.3 installed, and you're now using OS 10.5, then use the OS 10.5 Retail Install disk that you had used to upgrade your OS instead of the original, came with the iMac disk.)
Release the C key when the spinning gear below the dark gray Apple logo appears. Wait for the installer to finish loading. DO NOT do an OS installation. After the installer loads select your language and click on the Continue button. When the menu bar appears at the top screen, click on Utilities, and pull down to select Disk Utility. On the left side of the window that opens, select your normal hard drive entry (manufacturer's ID and drive size). In the lower portion of the Disk Utility window 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 at the top middle of the window if it isn't already selected. Now click the Repair Disk button from the lower right area of the window. If the disk utility reports any errors that have been fixed, then re-run Repair Disk again, until no errors are reported. When that is done, click the Repair Permissions button to the left of the Repair Disk button you clicked earlier.
When that is done, quit Disk Utility.
If Disk Utility reports errors it cannot fix, then you will need DiskWarrior and/or Tech Tool Pro to repair the drive. These are third-party disk repair utilities that cost money. If you don't have them, Google them for more info. If neither of them can fix the drive, you will need to backup your data ASAP.
If that doesn't work, try resetting the System Management Controller (SMC)
1) Shutdown the computer.
2) Unplug all cables from the back of the computer, including the power cable.
3) Wait fifteen seconds.
4) Attach the computer's power cord.
5) Wait five seconds, then press the power button to turn on the computer.
Reset the PRAM or NVRAM
Reset your PRAM. Press and hold down the Command Option P R keys while starting your computer. You will hear the startup chime. continue holding down those keys until you hear the startup chime a second time. Release the keys. If the computer restarts, you will need to reset your Date and Time. It might be time to replace your PRAM battery.
Run the Apple Hardware Test (AHT)
See here for running AHT for Intel-based iMacs:
https://support.apple.com/kb/ht1509
Good luck.

IMAC Won't start up its only 6 months old so I am frustrated.

This is the second time it has done this, the first time it froze when I clicked yes to and update, when I tried to turn it back on I got nothing but 3 beeps, so I got on my daughters PC and trouble shot the MAC finally got it back up and thought it was doing great. But the other day when I got up it was shut down (do not think there was a power outage, saw no evidence of one on other electronics)Any way when I turn it on the fans start it makes the noise like it is starting up then it starts the 3 beeps in a row pause 3 beeps again. I again got on my daughters netbook and tried to trouble shoot, but this time nothing is working. Any advise? Or is anyone else having this problem. I can't believe I am having problems with it already. This is my first MAC and I was so excited to get it, but now not so sure.

I would use the procedure to reset SMC
http://support.apple.com/kb/HT1543
which is basically disconnecting ALL cables and power, and reconnecting it following a precise procedure. When you reconnect the power cord, if you have been using a crowded or old power strip (surge suppressor), try connecting it directly to the wall outlet, at least initially. Then power it up. If that allows it to start up properly, connect just your keyboard/mouse. Use it that way for a while. You should also use this procedure to reset PRAM
http://support.apple.com/kb/HT1379
If all is well, you can add your peripheral (USB/FireWire) devices one by one. If the problem recurs at some point, check the possibility that the last device you added is causing this problem.
NOTE: After the SMC reset procedure, if the iMac still does not start up properly, even with nothing except the power cord connected, you should have it looked at by a technician at an Apple Store or Apple-certified shop. If it's only six months old, it still covered by the one-year warranty.

24" iMac won't start when iPod is connected

My 24" iMac won't start up/restart if my iPod is already connected to it. If I restart with the iPod connected, I just get a gray screen (with no apple logo) forever. Has anyone else experienced this problem? If so, any solution? I have Windows installed with boot camp, don't know if that's the problem, but I tried reseting the p-ram, but to no avail...
Intel iMac 24", 7600 GT, 500GB, 2GB. Titanium Powerbook 667 MHz G4, loaded. Mac OS X (10.4.7) 30 GB iPod Video

My suggestion would be disconnect the iPod. That's just me though.
http://docs.info.apple.com/article.html?artnum=93953
I'm guessing Boot Camp is the culprit. Whatever emulated BIOS it's using doesn't like the iPod as a startup disk.

IMac will not start up. Help please!

Earlier today I was surfing the Net with Safari. Suddenly, the page I was loading stopped loading. The arrow pointer would not move if I moved the mouse. The menubar clock's seconds stopped changing. The entire system was frozen. After about 15-20 seconds, the iMac's fans started blowing louder. After another 30 seconds, I gave up and tried the force quit key combo. No dice. So then I held down the power switch, forcing a shutdown.
Now, when I try to boot my iMac G5, I get one of 3 outcomes:
(a) I hear a faint fan sound, and perhaps the hard drive makes a sound, but nothing else happens.
(b) I hear the startup chime, but the chime doesn't finish. It's cut off and the iMac turns off. Sometimes the light on the front of the iMac comes on for a moment, sometimes not.
(c) The iMac starts up normally. After a minute or so, the whole system freezes again.
I use this Mac at work for all my medical records. Now I have no access to my medical records (but I do have a backup, thankfully). Without a working medical record system, I've had to cancel all my patients for the day and I'm scrambling to find a solution.
I found an article in the Apple knowledgebase. I followed the article step by step. It's called iMac G5: Troubleshooting when your computer won't turn on, and can be found at http://docs.info.apple.com/article.html?artnum=300908 .
With the back cover removed, and the power cord plugged in, LED 1 lights.
When I hit the internal power button, LED 2 and LED 3 lit up, and OS X started up. The login window appeared. Since my keyboard and mouse were not plugged in, a window came up saying that the iMac was looking for a bluetooth mouse. I don't have one, so I plugged in my USB keyboard and mouse, but the mouse never saw power (the red laser never came on). From that point forward, I couldn't get the mouse to work and after maybe half a minute, the fans started blowing again. So I think this was the same as my Mac starting normally, but then freezing. This time, it froze before I could login.
One thing I noticed: the iMac had been off and unplugged for more than 45 minutes. The last time it had been off and unplugged for more than 45 minutes, when I plugged it in an tried to boot it, it actually started up and I got to the finder. But then after I started to run Disk Utility, the OS froze up again. So it seems, if I leave the iMac off and unplugged for some length of time (45 minutes works), it will boot into OS X.
Okay, so on with the steps described in the article. I held down the internal power button, and the iMac shut down. I hit the SMU button (with the iMac off). Then, I tried the internal power button again. This time, LED 1 lit, and LED 2 lit, but then LED 3 does NOT light up, and the computer does not start up. I just hear a light fan blowing (near the processors, I think) and the hard disk makes a few clicks, nothing more. No chime, no display.
So then I reset the SMU again, by pressing the SMU button (which turned off the computer). Then I pressed the internal power button again. The computer still doesn't start up normally. Same as above.
Reading through the article it asks, after pushing the internal power button, does LED 2 come on momentarily, or not at all? Actually, neither. It comes on, and stays on. The article has no instructions for you if LED 2 comes on and stays on. At this point, I'm stuck.
So I checked another knowledgebase article, About the iMac G5 diagnostic LEDs. http://docs.info.apple.com/article.html?artnum=86815
It says:
- LED 1 indicates that trickle voltage from the power supply has been detected. This LED will be ON when the computer is turned off and your power supply is working correctly.
- LED 2 indicates that the main logic board has detected proper power from the power supply when the computer is turned on. This LED will be ON when the computer is turned on and the power supply is working correctly.
- LED 3 indicates that the computer and the LCD display are communicating. This LED will be ON when the computer is turned on and video signal is being generated.
- LED 4 lights only if the computer detects an over-temperature condition. This LED will be OFF when the computer is turned on and running at the correct temperature.
On my iMac, LED 1 and 2 light and stay on, while LED 3 does not (except for the first time I tried this, see above). This seems to indicate a problem generating a video signal.
So maybe it's a problem with the video signal, but I think something else is going on too.
iMac G5 (First Generation) Mac OS X (10.4.6)

right down to the "Troubleshooting when your computer won't turn on" 2nd LED staying on when the procedure only gave two options: Momentarily on or not coming on at all.
Hi guys,
The fact that the second LED stays on is actually normal. This what is meant to happen if neither the power supply or one type of motherboard problem have occured. Para 12 of http://docs.info.apple.com/article.html?artnum=300908 only provides the results (no light or momentary) that occur if the test provides evidence of a problem with either of them.
As Anthony notes, if LED remains lit constantly then power is reaching the motherboard and the computer is turned on as described in http://docs.info.apple.com/article.html?artnum=300908 .
Just wanted to make this clear in case other users got worried if they found LED 2 lit.
I agree that http://docs.info.apple.com/article.html?artnum=300908 could be made clearer in this respect.
Cheers
Rod

HT1338 Hi I have an Imac with I5 processor.It was working perfectly and i didnt use for about 2 months.The AC was unpluged.Then week ago when i want to start the Imac, it didnt start.But if i keep holding or pressing the power button for some times then i

Hi I have an Imac I5 21.5 inch.It was working perfectly.Then i didnt use that for about 2 months. Week ago when i want to start the Imac ,it didnt start.
When press and hold or keep on pressing the power button then i hear the fans are working and i get a continuous beep( but low freqency tone).
But screen does not turn on.Please help me to rectify this problem.Best Regards. By the way I am an electronic technician.So if there are any technical things to be done, Pls let me know.I can do it my self.

Hey terremo,
Thanks for the question. From the information you provided, it sounds like the iMac is successfully turning on, however video is not displayed. These symptoms can usually be isolated further by the troubleshooting steps in this article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Thanks,
Matt M.

My imac does not start anymore (stops at the screen with the apple and a rotating circle). An idea what I could try to make it start again?

My Imac does not start anymore.
==> What I have already done:
1) I tried with the tigger dvd to reinstall. It didn't succeed.
2) Via the single mode, when starting I got the message "disk0s2: I/0 error" several times. After that I got "Root device is mounted read-only"
3) Nevertheless, I tried the "fsck -yf" function. After checking "Journal HFS Plus volume", "extends overflow file", "catalog file"... and invalid record count
==> /dev/rdisk0s2 (hfs) EXITED WITH SIGNAL 8
Can someone advices me? I red on the internet I could reformat the disk... loosing all the data I didn't backed up. How am I suppose to reformat?
Thanks in advance,
Fred

Reset the SMC: http://support.apple.com/kb/HT3964
Reset the PRAM: http://docs.info.apple.com/article.html?path=Mac/10.6/en/26871.html
Restart the computer while holding down your mouse button which if you hold it down long enough (5 minutes at most) should eject the disk
If the disk still doesn't come out at that point then you need hardware evaluation;
contact Apple, contact an Apple Authorized Service Provider, or make an appointment with an Apple Retail Store.

My imac will not start - it is hunged up, when I turn it on I see the apple and the little wheel go around and around and nothing happens - what can I do ???

Hello - can anybody help me - my Imac will not start - When I try to start it I just get to see the apple and the wheel that goes around and around HELP !!

Restart in Safe Mode, this will clear some caches. How you do this is when you hear the startup tone hold down the Shift Key until you see the progress bar appear. Let it fully boot, then open System Preferences - Startup Disk and ensure your internal HD is selected and then click Restart to test. If you still don't have luck you should run Apple Hardware Test in Extended Mode, you may need to run the test 2-3 times to report any errors. To run AHT you will need teh ORIGINAL Install Discs that shipped with the computer. Instructions for AHT are in:
http://support.apple.com/kb/HT1509
Have you been backiing up?

My iMac don't start up properly

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