Imac 8,1 does not boot stuck on blue screen

imac8,1 mid (2008) 20" stuck on blue screen after boot ,It starts in safemode, below is a list of thing i have check so far
1 Apple hardware test (says every thing is ok)
2 Disk utility repair (was successfull)
3 reset PRAM ,SMC
3 Boot for OSX dvd and reinstalled (still only starts in safe mode )
4 boot in single user mode and used fsck ( said every thing was ok)
Yet when i boot i get stuck on a grey/blue screen . it starts in safe mode though, Is there some EFI , firmware restore file that i can install ???
What else can it try????

Please closely follow Apple's advice in Gray screen appears during startup. There are a number of steps to take, be methodical and follow the directions closely.

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IMac does not boot, stuck on gray screen

Hi all,
Need some troubleshooting assistance.
Attempted to install a CAC card reader, with the ActiveGold software on my iMac.
Reboot when prompted, and now the iMac will not boot at all (even will not boot in safe mode).
Have removed all external devices, and no dice.
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Ok, maybe with iMacs that come pre-installed w/Leopard it's on Disk 1. Did you check?
My MBP model, the HT is on Disk 2.
Anywho, try the following:
Except for the keyboard & mouse, disconnect all devices from your computer.
Repairing permissions from the Tiger/Leopard DVD
Boot up from your Tiger 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.
If Disk First aid is able to complete the repair now click on the "Repair permissions" button.
Once this process has been completed restart your computer.
See Knowlege Base Article:
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Did you repair disk permissions with disk utility as well, if yes then try to start you system in safe mode (hold down the shift key while restarting).

Mac does not boot past white loading screen and disk cannot be repaired?

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PochAstudille wrote:
How do I reformat the Mac when it does not even go beyond the white screen during startup? My Mac did not come with any recovery or installation disks. Are my unbacked up files gone for good?
Since you are able to get into Recovery Mode (Command+R), you can erase/format your Mac via Disk Utility.
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3: /sbin/mount -uw /
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10: installer -pkg SecUpd2009-001Intel.pkg -target / (this installs the acutal update, i used the SecUpd2009-001Intel.pkg and it worked though I think you might be able to use "Security Update 2009-001" with quotes as well.)
11: reboot
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Quote
Originally posted by Syruel
Thank you to everyone who helped me w/my prob. I got an Antec True Power 430--they didn\\\\\\\'t have any of the 550\\\\\\\'s in stock--and now my system is up and running.
Sadly, I still could NOT boot up the existing OS--I still had the same problems mentioned above--can anyone explain that?
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As for the manual and RAM...screw that...Quote
also do you mean 3 gigs of ram total when you say 3x1gig if so your board only supports 2 gig of ram when it is pc2700...
Yes, I mean 3 Gigs total. I read on Soyo\\\\\\\'s website that it\\\\\\\'s MoBo\\\\\\\'s do that and will only support 3 Gigs at 2100, hence me underclocking my RAM at 266 Mhz. It would have been really useful if MSI\\\\\\\'s documentation would have said the same thing. 3 Gigs at 2700 is the reason my system would NOT even POST. Where did you see that it only supports 2 Gigs at 2700?[/COLOR]
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T42P. Does not boot/startup. Black screen. All indicators except the battery and power are off.

Hi all,
I am new to the forum and so very desperate for help!
I have a T42P (2373-C61) machine. All of the sudden today, it blue-screened. I turned it off, then tried to turn it back on.
Now, it is not coming up at all. I can not even get to the BIOS or see anything in the screen!
All the lights/indicators are off except these two: the battery/power and the little z (the on indicator).
The NumLk and Caps Lock indicators flash every 15 seconds or so.
The hard drive, bluetooth, and wireless lights are off completely.
Tried getting to the BIOS by unplugging the battery and using the AC only but nothing happens when I press F1 or the IBM button.
Also, tried a suggestion from other users that requires unplugging Battery/AC, pressing Power button 10 times, then the 11th time for 30 sec. Still nothing happens.
No HW/SW was added to the machine recently...
Any suggestions is appreciated..

It can also be the LCD itself...
BTW, if the graphic card has failed that equals motherboard replacement since it's soldered to the planar...
Let's hope not...
Good luck and keep us posted.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

Desktop will not load, stuck on blue screen -- please help!

As I can see, many other Mac users have encountered the same problem that I now have: the dreaded ‘blue screen of death’. About a week ago, any internet browser that I tried to open (Safari, Firefox) would freeze after loading its home page, and tell me that the application was not responding. After force quitting and restarting each program a couple of times, with no positive response, I decided to restart my computer to see if that would do the trick. Upon booting up, it then started the same sequence that it is still doing now: first a grey screen will briefly show, then a white screen with the apple logo and a turning dial beneath it, followed by a blue screen which will show a window that says “Starting Mac OS X” with a progress bar beneath it, which will fill to various points (sometimes only 1/8 of the way, while other times it fills completely), but it always leads me to the same screen – solid blue with a black arrow that will occasionally be replaced with a turning dial, only to go back to the arrow again. I am using a PowerBook G4 with the Tiger version of OS X. No applications were running whenever I first decided to restart my computer, and to my knowledge, all software and security patches were up to date and fully installed.
I’ve researched and tried every possible option that I’ve come across, listed below with the results they yielded (if any):
 Holding the Command/Option/P/R keys upon startup (screen stays blank, and the computer continues to ‘chime’ until I release the keys. I have allowed it to chime a couple of times before I stop holding the keys, but it always leads me back to the same blue screen)
 Holding the Shift key upon startup (leads me to a screen that has an icon of my hard drive and two arrows. Clicking the left arrow does nothing, the hard drive icon does not respond to being clicked, and the right arrow starts the loading process which again ends with the blue screen)
 With the first OS X Installation disc that came with my computer inserted into the disc drive, holding the C key (nothing happens; sequence as normal)
 With the first OS X Installation disc that came with my computer inserted into the disc drive, holding the Option key (same results as holding shift key with no disc)
 With the first OS X Installation disc that came with my computer inserted into the disc drive, holding Option/Command/Shift/Delete (a grey screen appears with the icon of a folder, a question mark briefly flashes before being replaced by the two-toned blue face Mac logo. After continuing to hold the keys with this folder and face on the screen, I get no response, so release the keys and the computer continues to enter the white screen-blue screen sequence)
 Holding the Command/Option/O/F keys upon startup (a white screen appears, and following advice I have seen on other forums a type ‘reset-nvram’, then return, then ‘reset-all’, then return. The computer reboots and the sequence continues as usual. I have also tried holding the Command/Option/P/R to reset the PRAM immediately after leaving the white Open Firmware screen, allow the chime to sound a couple of times as before, but still I get no results)
 While on the blue screen, pressing the Command/Shift/Q keys (alas, I am the only user on the computer, so I cannot try to remedy my problem by signing into another account. From the screen the appears, I can either shut down, restart, or put my computer to sleep, or enter my password which leads me back to the same blue screen again)
I apologize in advance if I’ve included a lot of extraneous information, but I just wanted to cover the options I’ve already explored so as not to waste your time if you had any of these in mind. I’m going to post this on a few different forums just to make sure I have all my bases covered, but anything you have to offer in the way of suggestions would be greatly appreciated. If you could post your advice in layman’s terms that would be even more helpful; I’ll probably need exact, step-by-step instructions if required to start my computer in ‘safe mode’ or anything else an average user would not be familiar with. I know this is a lot to ask, so I thank you in advance for taking the time to read through this and offer any solutions that you may have.

Hi amnicolekidman, and a warm welcome to the forums!
Although you don't specify your Mac, it sounds like you have real HW problems, likely the HD.
Tough without a Tiger Disk, but try fsck...
To use fsck, you must run it from the command line. Unlike using your mouse to open an application to do something, you'll need to type a text command at the prompt (#) to tell fsck what to do. The Terminal application (/Applications/Utilities) and single-user mode are two examples of command-line interfaces in which you can type such commands. To use fsck:
1. Start up your computer in single-user mode to reach the command line. Hold CMD+s keys down at bootup. Note: If necessary, perform a forced restart as described in the Emergency Troubleshooting Handbook that came with your computer. On desktop computers, you can do this by pressing the reset/interrupt button (if there is one) or holding down the power button for several seconds. On portable computers, simultaneously press the Command-Control-power keys. If your portable computer doesn't restart with this method, you may need to reset the Power Manager.
2. At the command-line prompt, type /sbin/fsck -fy
3. Press Return. fsck will go through five "phases" and then return information about your disk's use and fragmentation. Once it finishes, it'll display this message if no issue is found: ** The volume (nameofvolume) appears to be OK  If fsck found issues and has altered, repaired, or fixed anything, it will display this message: *** FILE SYSTEM WAS MODIFIED ***   Important: If this message appears, repeat the fsck command you typed in step 2 until fsck tells you that your volume appears to be OK (first-pass repairs may uncover additional issues, so this is a normal thing to do).
4. When fsck reports that your volume is OK, type reboot at the prompt and then press Return.
http://docs.info.apple.com/article.html?artnum=106214
Then Safe Boot , (holding Shift key down at bootup), off the HD & use Disk Utility from there to Repair Permissions, reboot once more.

I can not boot past the blue screen, but safe mode is fine...

I have no clue what I did...
Everything was working fine on my iMac (which is from like 2008). I did a file migration transfer from my Macbook pro to the iMac and everything seemed to be good. I could see everything, etc. I went to update the software on the iMac since the computer has not been used in a while. After everything updated and installed the computer restarted and has not been able to move past the blue screen when booting. I can start in safe mode just fine. I have done everything I can find on how to trouble shoot with no luck.
I have reinstalled the OS X
I have held down every combo of keys when restarting the computer
I have made sure the correct disk is highlighted for starting up
I have done everything I could find online...
I do not have the option to erase under the disk utility, or repair?
I am so lost and have no idea what to do. Did the migrate do this? I could use any help! Thank you.

Clean Install of Snow Leopard
Be sure to make a backup first because the following procedure will erase
the drive and everything on it.
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W520 will not boot when docked; blue screen

W520 fails to boot 100% of the time when docked. Blue screen shows SYSTEM_SERVICE_EXCEPTION, STOP x0000003B for nvlddmkm.sys
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Boot with Option held down. After the cursor changes to an arrow, Command-. (Command Period) should open and close the optical drive. After you insert the disc, click the curved arrow to have it re-scan the discs for boot volumes. Then select the optical drive and click the straight right-pointing arrow to start.
Try it with the Apple Hardware Test disc first and run Extended Tests.

Won't boot, stuck at blue screen

I have a problem with my MBP.
I was working on it just like every other day. While listning some music, at some point i lose all sound. Tried the headphones, ... Nothing worked. Next thing i was rebooting the MPB like normal (apple, reboot,...). While it was rebooting, i passed the gray screen with the apple logo and the little spinning thing. After that i got to the blue screen and was able to see the mouse point. But that's it. I'm not getting my login window, no menu, ...
Tried the Leopard disk, and repaired the disk. Repair was ok. Same result
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Yes I have, and i couldn't find it.
I haven't got the time for waiting for an answer cause i really need this laptop. While i was going over other topics one told me to reinstall using Archive and Install. I just couldn't wait, so i took the chance.
I thought i was going to lose some stuff, or at least preferences like my Adium look. I put in the Leopard dvd, rebooted with the "c" pressed in and reinstalled it (using the archive and install option). The system rebooted again. I finally got back my login windows, logged in, and EVERYTHING was identical: passwords, preferences, maps, startup applications, even the alarm on my Awaken
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Powerbook won't boot - stuck on blue Screen with rolling pin wheel

Hi, maybe someone could remove my current headache.
My old Powerbook G4 is stucked on a blue screen with an infinite rolling pin wheel(just after the little mouse arrow appears and disappears).
For the information:
- I already did all the possibilities on this page without success:
http://support.apple.com/kb/TS1411?viewlocale=en_US#symp1
- When I do Fsck in single user mode, it tells me that everything is fine with the HD
- I also checked techtool pro v4: everything is fine with the hard drive and files
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- I can't put my computer in Firewire target disk mode - the Fireware icon screen appears but it doesn't mount on my apple dekstop.
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Message was edited by: NGrignon

I don't know where is my old PB G4 install disk, so I can't try that.
And, there in lies the solution. Without an OS disc to repair the OS you are up the creek without an OS disc.

Imac 8,1 does not boot stuck on blue screen

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