IMac G5 boots to grey apple, fans speed up,, not able to use

i have a 20in 2.0 iMac G5 that wont boot past the grey apple. ive removed the power cable made sure that the cables are making clear connection, power is going through the supple, otherwise it would not boot at all. after the boot up, the fans start spinning rapidly and it stays there, till i hard power it off. any suggestions?

I assume that we are talking about a "G5 PPC 20inch iMac" even thought your profile reflects a "20" Intel iMac" which is completely different.
Couple things that you could try here:
1. Boot into Safe mode and see if it will boot into the desktop, then run Disk Utilities, Such as "Repair Disk".
http://support.apple.com/kb/HT1455
2. You could try resetting the iMac SMU:
http://support.apple.com/kb/HT1767
3. Boot into the install DVD that came with your iMac unless you have upgraded the OS and in that case boot from that install DVD. Then you can run "Repair Disk" and "Repair Permissions" from disk utility on the install DVD.
To obot from DVD:
Put the DVD into drive, then power-off Mac.
Power-on Mac and immediately press and hold the "c-key" until you get the language screen.
Select your language then continue.
On the Welcome screen, go to the tool bar on top and select the Utilities drop down then select Disk Utilities.
Run "Repair Disk" and "Repair Permissions" on internal OSX drive.

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New iMac is stuck on grey apple screen after restart from Migration Assistant

New iMac is stuck on grey apple screen after startup. It is a 3.4GHz Quad-core Intel Core i5 running OS 10.9.4. The problem occurred after a migration from my older 2009 iMac which is running Snow Leopard 10.6.6. When the restart occurred from Migration Assistant, the new computer will not boot up to the login screen. Disk utility did not solve problem. Followed instructions for a soft reinstall of Mavericks but that also did not solve problem. Any suggestions?

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

MB990 and SL - Fan speed is not increasing automatically

Hi Guys,
Two days ago I changed my macbook's hard drive to a bigger one and did a fresh install of Snow Leopard.
As soon as I installed the SL I noticed my computer was running hotter than the previous installation. Without doing anything, my macbook is reaching 75C (167F).. I have already checked the activity monitor and no process is using the CPU. Now I realized that the fan speed is not increasing automatically, it is always fixed at 2000rpm even if the temperature reaches 72C.. I have already tried a SMC reset but the problem persists..
Does anyone know a solution for this? The problem is the fan speed that is not increasing..
I'm having to use smcFanControl to control de fan speed manually. Before the fresh install I was using Snow Leopard updated from the Leopard and I was not facing this problem.
Thanks a lot!

Hi there... i have the same problem. my temperature gets up to 75C with just one window open in safari or google chrome. I have downloaded smc Fancontrol but ...its not enough. have u solved this problem yet? i'm going in to the Genius Bar tomorrow to see if they can help.

CPU heats up on file copy/backup and fan speed does not increase

Hi Friends,
I have been having issues with fan in my Dell Studio 1555. It has an ATI Radeon card and I had installed the proprietary catalyst driver as the open source driver is too noisy.
Recently, I noticed that on accessing my hard disk and copy files or running backup (luckybackup), the temperature shoots up from around 60 deg C (just using chrome) to 100 deg C when it would shut down itself. However, it seems like the fan speed does not increase with the increase in temperature to help it cool down.
I tried to get the fan speed details with "lm-sensors" but it would not show the fan speed. Here is the output of sensors:
[user@domain]$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +60.0°C (crit = +100.0°C)
temp2: +59.0°C (crit = +100.0°C)
temp3: +66.0°C (crit = +100.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +58.0°C (high = +105.0°C, crit = +105.0°C)
Core 1: +58.0°C (high = +105.0°C, crit = +105.0°C)
Following the Arch wiki, I added acpi_enforce_resources=lax to kernel parameters but it did not help as well.
Here is the main problem:
1. CPU temperature shoots on accessing hard drive but fan speed does not increase - Any guide/direction to investigate would be really helpful.
2. Sensors does not show the fan speed. Read about i8kutils, but couldn't figure out how to get it working with systemd. Any indicators here?
Last edited by ravisghosh (2013-07-01 05:22:01)

luuuciano wrote:Ravi, did you solved it?
Im having similar issue on a vostro 1710, fan never works... :-/
The fan was bad. I had to replace the fan. However, I have not been able to figure out how to see fan speed in sensors.
Last edited by ravisghosh (2013-09-08 15:57:37)

Not able to use Mac after booting windows from bootcamp!

Hello,
In my Mac mini, I dual booted it by installing windows on it using bootcamp!
Could you help me how to go to mac partition and i am also not able to use windows!
Pls help
Punit Khatri
+91-9925326095

Hi there:
You may be able to start up the Mac in such a way as to look
for an OS X volume at the same time using a keyboard comb-
ination at startup... Press key(s) immediately after start tone.
Press Option (opt) key during startup will start in Startup Manager
where you can select an OS X volume or network volume to run.
{There is also a way to choose a hardware test for diagnostic
purposes on startup, too. Some macs have features in the OS
to include a 'recovery' mode on later models.}
• Startup key combinations for Intel-based Mac:
http://support.apple.com/kb/HT1533
PS: if you decide to remove Windows, you should also
consider Boot Camp to remove the partition it made.
Hopefully this helps.
Good luck & happy computing!

Not able to use internet sharing on my iMac 8.1 using Mac OS X 10.6.8

Im not able to use internet sharing on my iMac 8.1 using Mac OS X 10.6.8, I tried internet sharing with OS Lion and it works fine. Has anybody else experience this problem and what was the solutions.

If your OS is OS X 10.4.11 then you should be able to install iTunes 8.1 which according to the iTunes page requires 10.4.10 or later (which is a lower version than yours). It also requires QuickTime 7.5.5 so check your version of QuickTime. Version 10.4 is Tiger by the way. Leopard is 10.5 and Panther was 10.3.
Make sure that your OS is at the version you think it is. Connect your MacBook to the internet and from your desktop go to the Apple symbol on the Finder bar at the top of your screen. Choose "About This Mac" and check your OS version. Also from the same menu choose Software Update and see if you are offered any updates for your computer. If it does offer an OS X update, install it and anything else in the list then run software update again to see if any more components are offered for the new version.

HT2589 when I try and log in my i-tunes account or my app store account on my i-phone it says "this apple I.D has not yet been used on the i-tunes store" it gives me 2 optins "cancel" or "review" I press review, enter my bank details but they decline..why

Hi can anybody help or advise me? I've recently bought the i-phone 4s, I've set up my apple I.D and password but everytime I try and log in it says "this apple I.D has not yet been used on the i-tunes store" I click "review" follow the instructions and agree to the terms and condition's, enter my bank details but it declines every time? I've tried both my accounts and its declined both, this stops me from logging in so I can't download anything for free or buy anything, my sister had the option of skipping the bank details part when she created her apple I.D and just enters her's when buying something, why do I not have that option?? And why is it declining my bank details...please HELP!!!!!

The details I'm entering are correct, I choose visa as my card type, enter my card number, enter my expiry date and my last 3 digts on the reverse of the card, enter my address and zip code plus my home telephone number, click continue and it says "the payment method you have selected has been declined, please enter another payment method". I've lost count how many times I've tried, I've typed my details in slowly making sure I put them in properlly and it still declines it, I've even tried makeing a new apple I.D and when I get to the bank details part it declines it again so I am forced to press cancel and all details are not saved so its just like I'm hitting a brick wall, its ******* me off!!! I can't even download any of the free app's because to do so you must log in but when I do it says "this apple I.D has not yet been used in the i-tunes store" review my details and can't get past the bank details part. So doesn't log me in, I'm honestly out of ideas

I am trying to import Firefox bookmarks from a Windows machine into Firefox on an Apple. I do not want to use Safari. How do I do this?

am trying to import Firefox bookmarks from a Windows machine into Firefox on an Apple. I do not want to use Safari. How do I do this?
I have, on my HP laptop, running XP Pro, using Firefox 4.0, went under bookmarks to show all bookmarks. A window opens up that says library. I then go to import and back up, and I choose export HTML. I then move this file over to my new Mac Pro. On my Mac Pro I also have Firefox 4.0. I go up under bookmarks, show all bookmarks, import HTML. It lets me browse and I find the file on the desktop, I select it then nothing happens. I am not interested in using Safari. I would like to continue using Firefox. However, as an experiment, I followed the same process except on my Apple computer I opened up Safari and tried to import in the Firefox bookmarks. It came up with an error saying the file could not be accessed. I then thought perhaps the file got corrupted, so I went back to my Windows Firefox and re-exported the bookmarks again. Same problem. So, am I creating the bookmarks incorrectly on my Windows machine?
Thanks,
Kent

Probably your Mac cannot understand the Windows html format, please try the following to see if it helps:
In your PC, export the bookmarks in html as you did in your post. After you have saved it, change the name of the file to “bookmarks.html” and save it again.
In your Mac, import the saved file as you posted.

I am trying to sync my itunes with my ipod, but when I get to step 3 of syncing, it stops. Also, I deleted all the songs on my ipod, and when I go to my music in my ipod the songs are all still there and in a grey color and I'm not able to select them.

I am trying to sync my itunes with my ipod, but when I get to step 3 of syncing, it stops. Also, I deleted all the songs on my ipod, and when I go to my music in my ipod the songs are all still there and in a grey color and I'm not able to select them. How do I completely clear my ipod music, and how can I solve the syncing problem?

Sync works the same way it always has, connect the device, select the content desired to sync and sync.
All the media should be in iTunes already, iDevices are not and have never been backup devices.
If this is a new computer, move the content from the old computer to the new computer.

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The wi-fi in my iphone 4S is 'greyed out' and i am not able to switch it on. I have tried resetting the network settings but nothing happened. I can't even download the new iOS7 version as it requires WI-FI to do so. Please help.

I had same problem. I removed the back cover, and warmed wi-fi module by hairdryer of my wife). five days wi-fi works great. I do not know what will happen next.
during operation iphone must be turned off. time of heating is near five minutes. wifi module is located upper the battery, on the upper right corner of device.

IN APPLE STORE I WAS NOT ABLE TO UPDATE MY SOFTWARE AND THER IS ALWAYS AN ERROR 13 SHOWN WHILE UPDATING, IN APPLE STORE I WAS NOT ABLE TO UPDATE MY SOFTWARE AND THER IS ALWAYS AN ERROR 13 SHOWN WHILE UPDATING

In Apple store I was not able to update my software and ther was an error whenever i tried to update it ,error is 13

Did u try to delete ~/Library/Cookies/com.apple.appstore.plist yet?
Just an FIY, my first post are not steps, they are different ways of fixing the problem.
I.E.
Try #1. ->>Didnt work. Then Try #2. --> if that doesnt contact this post again. I will try to help you as much as I can before the need to reformat is considered.

HT1351 I have a apple ipod touch but recently I restored all the settings, as well as the applications. But now I am not able to add songs to it. There is blank screen that shows the symbol like to connect to itunes first. I'm not able to use that... Plea

I have a apple ipod touch but recently I restored all the settings, as well as the applications. But now I am not able to add songs to it. There is blank screen that shows the symbol like to connect to itunes first. I'm not able to use that... Please help

The iPod's firmware is corrupt. You'll need to restore it again in iTunes. If necessary, place the iPod in recovery mode for iTunes to recognize the device. Use the instructions in this Apple support document to walk you through the process of placing the iPod Touch into recovery mode.
iOS: Unable to update or restore
B-rock

I have a consultation with you. Because my sister is updating the IOS8 Iphone 4S. Then was not able to use it. Random screen freezes apple.So bring your instruments to Restore Center. Machine can use it. But can not access .

Dear Staff
I have a consultation with you. Because my sister is updating the IOS8 I phone 4S. Then was not able to use it. Random screen freezes apple. So bring your instruments to Restore Center. Machine can use it. But can not access the page that actually works. Because of the problems with ID of icloud.
She forgot the ID of the user and that of the other. I caught only a password is *******. I would like to ask for technical assistance. What should I do to get back to work normally. Or you can reset the ID and password or not., And set to work. If you do not have an iPhone, this airplane. It becomes a good paperweight itself.Hope you will understand. Buying splash, it is not easy because it's expensive.Learn to understand and to help.
Highly respected
Sarawut
My email: ********
<Personal Information Edited By Host>

It is locked to your sisters carrier.
She would have to ask her carrier if they unlock iPhones and if she qualifies for this service.

My iphone is not charging or showing in my computer. but its getting charged via wall apple charger.. Not able to connect with itunes.. please help.... :(

My iphone is not charging or showing in my computer. but its getting charged via wall apple charger.. Not able to connect with itunes.. please help....

No it doesn't. Sometimes it make a sound that it should when connecting but that is it. Never actually charges or syncs. And it is a brand new cord.

I have an iMac 20 inch early 2009 software osx 10.8.1(12b19)...i am not able to use my internet, outlook, or any messenger. tried troubleshooting, reseting safari, disabling firewall, deleted intego...still no internet

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Like nearly all antivirus utilities for OS X, Norton a/k/a Symantec and Intego are worthless junk that will cripple your Mac. Remants of one or both are most likely preventing Safari from communicating.
Search the forums for techniques to eradicate them - simply disabling them or dragging their apps to the Trash is not likely to be sufficient. Start by reading this procedure from Symantec:
http://www.symantec.com/business/support/index?page=content&id=TECH103489
For Intego: http://support2.intego.com/kb/index.php?x=&mod_id=2&id=214
... i did delete intego without uninstalling so im wondering if that caused the problem.
I believe you are correct. Download and run its uninstaller.

IMac G5 boots to grey apple, fans speed up,, not able to use

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