Start up problems iMac 27"

Would anyone be able to help?
The power in the house has been down, and now my iMac doesn't start. (it is a bit more than a year old). When I push the power button on the back of the screen, the fan starts on quite high rev and go for a minute or so, then it turns itself off. Some times thescreen lights up and the tone signal goes off, but the it does again.
I have ahd this problem onece before, and the it was cured with a Power Conroler Unit something reset. I can find that instructions on the internet unfortunateley.
Can someone help?
Many thanks in advance Ove

The first thing you should do after getting the machine up and running is buy yourself a decent UPS, they can be for less than $100. Get one with a USB connection so you can connect it to your iMac and then control it.
I would recomnend doing a SMC and PRAM reset first:
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

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Start up problems imac

On start up I get a gray screen with a small folder in the center of it. The centre of the folder alternately flashes a face and a question mark. Tried restarting from Disk etc. Didn't work. Now beyond my pay grade!. Can anyone tell me what is wrong ?

christopherfromlongborough wrote:
Sadly this doesnt work.   I get two messages
Unable to find driver for power mac 8,1 and Darwin Kernel v 8.10.2 "we are hanging here"
Here is a forum that discusses exactly this message:
http://hintsforums.macworld.com/archive/index.php/t-72060.html
The verdict seems to be that it's one of :
•   bad RAM (third party)
•   using the wrong disks (e.g. the original Tiger disk when Leopard has since been installed)
•   failed logic board
If any of those ring alarm bells with you, especially the first two, then maybe you're on the way to a diagnosis.

Start up problems, including from installation disc.

Hello everyone in the Apple ether, I need your help!
I have a powerpc based iMac G5 at home that I set up for my mum to use once I bought my macbook. I finally managed to win her over with talks of how much easier it would be for her to manage her photos in iPhoto, and everything was going really well. I recently came home after my final year at uni and some travelling to find that the computer is taking a long time to start up. This can be in both the grey apple loading screen but also once it logs in it can take a long time to display anything over than the desktop background, and even once it displays other items any attempt to open anything just results in a spinning wheel icon. At the worst case it has taken about 20 minutes to get going.
Once it has fully booted, the machine doesn't appear to be working any slower than normal. I tried using disk utility in mac OSX and verifying permissions etc and that didn't do anything. I then tried googling the problem and came across this article on the apple web site. http://support.apple.com/kb/TS1417
Starting in Safe Mode did not resolve the issue so after backing everything up I tried starting from the installation disc. This is not something I have ever done before and as someone that never really delves beneath the surface of her machines I was a bit scared of doing it. But I put the disc in and restarted and held down C just after I heard the chime, and shortly after it all went wrong. The screen went grey and all I could see was the image you get when it crashes (you know, the power sign with text over it saying you need to restart) with lines of code all down the left of the screen. I took a photo of the screen on my camera so can give details of the code if you need them. The last line said
Kernel version:
Darwin Kernel Version 8.8.3: Wed Oct 18 22:00:38 PDT 2006; root:xnu-792.15.4.obj-4/RELEASE_PPC
panic: We are hanging here...
After a few minutes on this screen the fan started working overtime and after about 5 minutes of that I just turned it off using the power button on the back. The machine has since started up normally (ie slowly) but is working fine.
So I was wondering if anyone had any ideas how to fix the slow start up problem without booting from my install disc, or indeed if anyone could suggest why I can't boot from my install disc? Thanks very much for your time and help.

It appears you experienced a kernel panic which is hardware related. A few suggestions for you to try:
Except for the keyboard & mouse, disconnect all devices from the computer & try the suggestions mentioned in the following:
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
==============
Boot up from your Tiger or Leopard Install DVD while holding down the "c" key.
Select the language you wish to use, and then choose *"Disk Utility"* from the menu bar.
Your HD should appear in a panel on the left hand side of the window which opens. Select it and then click on the *"repair disk"* button in the right hand section of the window.
Once this process has been completed restart your computer and run *repair permissions* from Disk Utility.
* If Disk Utility (from the install DVD or HD)is unable to complete the repair, you will need to use a stronger 3rd party utility like DiskWarrior, Techtool PRO (not Deluxe) or Drive Genius.
=============
How much HD space is left on the iMac?
How much RAM is installed?
==============
Which "model" & "generation" G5 iMac does your mother have?
Need this info so that the knowledgeable users can provide you with the proper troubleshooting solution(s).
http://docs.info.apple.com/article.html?artnum=301724-en How to identify your iMac
http://docs.info.apple.com/article.html?path=Mac/10.4/en/mh355.html Getting information about your computer
You can have this info displayed on the bottom of every post by going to 'My Settings' which is located in the column on the right under your name, and filling in the information asked for.
Thank you

Does anyone know why or what is the reason when starting a new iMac with Lion a gray bar sometimes appears when loading software?

Does anyone know why or what is the reason when starting a new iMac with Lion, sometimes a gray bar appears under the Apple that begins to shade to dark as it loads OS? It does this on occasion. One time the system loaded was VERY slow and terrible colors. Pulled the plug, re-started the computer and it did not do this. As I say, its only on occasion, not every time. I noticed in the discussion page there were problems listed for 10.6 nothing for Lion.
Please advise, if possible.

You should see this 4 option menu. Click on Disk Utility:
In Disk Utility, Select FIRST AID and then VERIFY and then REPAIR the disk.
Ciao.

Start up problems and screen shake

Dear all
I have started experiencing problems when I start up my iMac. Prior to the Blue Apple Screen appearing on startup I get a fuzzy grey screen with thin lines moving up and down the screen. This lasts for about 5 seconds then clears when the Blue Apple screen comes on. It never used to do this.
Once I am logged in my screen tends to have a series of small dots (like pixels) forming short lines across the screen. These change each time I log on.
Also, when this has happened the whole screen goes 'fuzzy' for a few seconds before clearing again. This can re-occur at any moment.
This problem does not always happen but maybe three out of four start ups. If the problem at start up does not occur then I do not experience the fuzzy screen.
Any ideas? I am very concerned that something critical is up.
I have done the most recent updates.
ps I am not a computer whiz!
Regards
Adam

Hi Adam,
This is exactly what is happening to my iMac which will be repaired this week. It is critical but it is due to a known fault on some of the iMacs.
Go to http://www.apple.com/support/imac/repairextensionprogram/
Even if your iMac is out of the 1 year warrenty it will be covered for this.
bw's
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Start-up problems due to firewire/usb devices?

Hi
recently, my imac G5 has been having some strange start-up problems. It had been working fine for the previous 11 months I have used the machine.
The start-up problems occur mainly after the computer has been shut down for some time (eg in the morning). When I press the start-up button, the computer will make the start up noise and then get stuck on the blue screen. Sometimes (but not always) the fan will start making a loud noise. Sometimes it is possible to turn the computer off and try to restart with the button at the back of the computer, at other times I have to turn the computer off at the power point and start again. I have tried to start up in "safe mode", but that also does not always work. This morning I was only able to start up the computer after unplugging all external devices, after which the imac started fine. I then replugged everything - no problem. However, I would like to be able to start-up without having to unplug and replug my various devices!
I am using several firewire devices (LaCie 250gb external hard-drive, Cd and DVD burner) and USB devices (scanner, printer, external USB drive (which I use for back-ups and which is mostly removed from the computer).
I have run disk utility to check the hard drives - they all appear to be ok.
I have a feeling the problems may have started when I tried out some back-up software to set up a regular back-up scheme. I have now removed all scheduling from my back-up software (silverkeeper, synk) but the problem remains.
Is it possible there is some problem with the drivers for the external devices? Any ideas?
Thanks a lot
Barbara
iMac G5 Mac OS X (10.3.9)

Hi Barbara,
Yes, USB devices particularly (including some hubs, most USB adsl modems, some printers and scanners and the like) can most certainly be the cause of this sort of problem (By far the most common cause, in fact)
First step is to simply remove them all, and see if the problem goes away. If so, then try adding them one at a time directly connected to the computer, testing them for a while, and see whether you can pin down which one it is.
Once you have tracked it down, if the device has its own drivers then look for any updates on the manufacturers web site, of course.
If the device doesn't have its own drivers then you can try simply disconnecting before shutting down and reconnecting after starting up, but the best solution is usually to replace the device.
(For what its worth, my bet, in the absence of more information about the actual devices attached, and as long as you don't have a USB adsl modem, is that its going to be a USB hub causing the problems )
Cheers
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Start-Up Problems = Frustrating :D

Howdy
Alright. So I've had my iMac 24" , 2.8GHz since Feb08 and it's been awesome until recently, putting the computer to sleep freezes everything and requires me to reboot the entire machine. But! That's only the first part of it.
The computer overall runs normally, but turning it off means a world of wonders to turn back on.
• The screen does not show the apple logo, no flashing ? either.. just plain white
• control + command + p + r = apple logo, turns into a circle with a diagonal line as shown here: http://support.apple.com/kb/TS1892?viewlocale=en_US
• I have a bootcamp installation, so I tried pressing the Alt /Option key to try and boot into windows but the partitions do not show up, the cursor appears perfectly though.
• Pulling the plug after turning the mac off for 30 seconds along with ALL the written documentation on "Start Up Problems" in the guides both online and offline failed to do anything.
• Hardware Check passed with flying colours.
• Disk Checks both verification through cd and permissions within the system passed with no problems.
Anyone else get this lovely problem? Please help me out here before I start manually pulling my hair individually. ty

Hi there:
The symptom(s) you note are among some shown to be in
the group known as a 'kernel panic' and so that may be due
to either (or both) software and/or hardware.
Sometimes, there is a software conflict; so if something was
added to the system which makes a conflict, there is a chance
that a kernel panic may result; however slim that would be.
And if something in one of the folders you can see on the
base level (as icons, etc) in the hard disk drive have been
moved, modified, or somehow otherwise changed from
their original content, character or quality: a kernel panic.
Have you been able to boot the computer from the Installer
disc and run that disc's version of Disk Utility from that item's
own Menu bar? This is short of running the Installer, since
there are options in the menu bar once the Installer is visible.
You can try and see if the tool, Disk Utility, can repair disk;
and repair disk permissions, plus a few other things.
Sometimes, the 'kernel panic' is a matter of trial and error
troubleshooting (a process of elimination) to see what is
an answer by trying everything; then you have solved it.
One of the old standbys for resolving kernel panics has been:
"Resolving Kernel Panics"
http://www.thexlab.com/faqs/kernelpanics.html
Another source of similar yet slightly different information, is:
"Technical Note TN2063: Understanding and Debugging Kernel Panics"
http://developer.apple.com/technotes/tn2002/tn2063.html
If any files on the root or base level of the hard disk drive have
been removed, renamed, or somehow changed, there may be
a problem in starting up and running the computer. So, if you
can (and - nothing - else works) boot from the Installer disc, and
repair disk, repair disk permissions, an you are at a total loss,
you may try and see if a new system will work. To do this, you
would continue in the Installer past these Utilities and try to
install using an option known as "archive & install" and be sure
to note a checkbox may be required for this to keep your old
settings current in the new system folder it would create.
That may work. And it may be of help to read up on how to
"archive & install" a new system folder. You would also have
to upgrade this new system to whatever current versions of
system software and not overload it with a huge pile of them
at once. To install a few items (often downloads from Support
or choose the automatic Software Update, but not let it install
all that it finds at one setting) and be sure to run Disk Utility's
'repair disk permissions' between installations of software items.
{Before going through all this, have you tried to start the computer
with the Shift - key held down, so you can log into the system in
SafeBoot/Safemode? Then if you can, use the internal Disk Utility
to 'repair disk permissions', then note the repair comments; and
quit Disk Utility, then choose to restart the computer normally.}
You still may have to read through the 'resolving kernel panics'
but there may be some easier way out, instead of installing a
new system folder and upgrading it. There is a reason for this
issue; so something must have been changed in the system.
PS: And if nothing else, the issue may not be directly related to
the 'kernel panic' so you could try reading among these related
results from a search I just did on the "dreaded white screen..."
• ' iMac white screen at startup ' - google search:
http://www.google.com/search?hl=en&q=imacwhite+screen+at+startup&aq=2&oq=iMac+white+screen
Good luck & happy computing!

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Anyone else who may have experienced a similar problem?
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Hi
Please find the link given below might help you to fix your issue.
Resolve Boot Device not Found Error Message
Let us know how it goes!
"I work for HP."
****Click the (purple thumbs up icon in the lower right corner of a post) to say thanks****
****Please mark Accept As Solution if it solves your problem****
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HT202157 just started a new apple tv and also started using an iMac . I have itunes on the iMac but i cant get the apple tv to sync or find any settings to do so !

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dedegodoy wrote:
I decided to buy the iphone 5S and since downloaded the IOS7.1.2 the search of your phone contacts it takes to open or write
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Photo Gallery start up problem

I have a glitch and it's probably me … but here's what
I know.
About Don Booth's Photo Gallery:
It's great. Everything is good - integrated with my CSS -
looks nice.
When the page loads all is well except the first image in the
Gallery does not display in <div id="mainImageOutline"... (and
the first thumbnail is not highlighted). While I'm building and
testing this is OK. Just click a thumbnail and everything works
well.
In the demo, the Gallery is operational by default and starts
up with the first thumbnail and Spry:detail produces the
corresponding image (automatically). That's what I want.
About my code:
Except for a couple of "page layout" divs that I have,
consistent with my own site-wide style sheet conventions, such as
<div id="wrapper"> and <div id="maincontent"> I have:
1. Copied Don Booth's xhtml code directly from the
Spry_1_1_022408 download sample.
2. Copied Don Booth's css code directly from the same
download sample.
3. Copied Don Booth's gallery.js directly (without change as
far as I know).
The only significant change (apart from CSS and xhtml
structure) in my work is - I added an additional Spry:detail div to
present additional datapoints from xml. This is not relevant to my
question because the issue that concerns me is consistent if I
remove this second detail div. The start-up problem remains.
The URL for the gallery page in question is:
http://www.yhqg.org/Celebration/quiltshow2008/galleryix/gallery.htm
I imagine the problem is in gallery.js. You should know that
javascript is a bit like dungeons and dragons to me.
I have an error report:
Error: dsPhotos is not defined
Source File:
http://www.yhqg.org/Celebration/quiltshow2008/galleryix/includes/gallery.js
Line: 55
So, when I see:
var gAutoStartSlideShow;
if (gAutoStartSlideShow == undefined)
gAutoStartSlideShow = true;
I imagine I'm looking at something useful but I don't know
what to do with it, or if it is the right code to focus on. I
respect the relationship with level 4 support engineers, but after
trying to solve my own issue for a few weeks I decided it was time
to submit my question. How do I get Photo Gallery to start up like
the demo?
Additional information:
There is also a series of error reports that show when the
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Warning: Expected end of value for property but found
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Declaration dropped.
Source File:
http://www.yhqg.org/Celebration/quiltshow2008/galleryix/gallery.htm
Line: 0
I don't think it is related, but that's what I know.
I tried to copy my xhtml (below) but it caused this message
to exceed allowed size. But I don't see that xhtml is the problem.
You can see the source at the URL (above).

Hi Latauro,
Sounds like you need to turn your Slideshow into a Track, and then set the Track to display as 16:9 Letterbox; but first, you'll also need to encode your slides as wide Mpeg 2 clips (encode set to 16:9), too; to whatever duration you have them set in the Slideshow, currently (if they're not already wide encoded clips).
It would be good to stick some same duration audible or silent same format and bit rate audio underneath each of the new movie slides, to present players a nicely packed VOB.
Take care,
Trai Forrester
TFDVD Research Labs
http://www.DVDVerification.com
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Mid 2007 iMac 2.4GHZ. after start up the iMac will slow down to a freeze. Specially while on internet (youtube).

mid 2007 iMac 2.4GHZ. after start up the iMac will slow down to a freeze. Specially while on internet (youtube).

See:
Mac Maintenance Quick Assist,
Mac OS X speed FAQ,
Speeding up Macs,
How to Speed up Macs,
Macintosh OS X Routine Maintenance,
Mac troubleshooting: What to do when your computer is too slow,
Essential Mac Maintenance: Get set up,
Essential Mac Maintenance: Rev up your routines,
Maintaining OS X,
Five Mac maintenance myths and
Myths of required versus not required maintenance for Mac OS X for information.

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Hello out there,
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Subject Title and beginning of post edited to reflect new topic.

Hi
Please find the link given below might help you to fix your issue.
Resolve Boot Device not Found Error Message
Let us know how it goes!
"I work for HP."
****Click the (purple thumbs up icon in the lower right corner of a post) to say thanks****
****Please mark Accept As Solution if it solves your problem****
Regards
Manjunath

Start up problems iMac 27"

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