Why will my iMac boot fine in Safe Mode but freezes on a normal boot?

It is a 17" iMac.  1.83Ghz Core 2 Duo.  1GB RAM.  160GB Hard Drive.  Combo Drive with Intel GMA 950 GPU. 
I took out the screen and put in in a different computer a while back.  This was a working computer before hand.  I pulled it off the shelf the other day to get it going (using an External Monitor) and when it gets past the Apple Screen, it goes to the blue screen, and then loads the wallpaper and some of the taskbar, but no dock and it freezes.  (This is on a fresh install of Leopard).  When I boot to safe mode, it boots fine.  I have tried reseating RAM, different RAM sticks, and a different hard drive. Also replaced PRAM battery.  Done a SMC reset and a PRAM reset.  No change.
Also worth noting was that when I tried to boot my Leopard disc, it would freeze at the Choose Language screen.  So I took the HD out and installed Leopard thru my other iMac and reinstalled OS X.  Did the same thing when I tried to boot from a Snow Leopard disc. 
Ideas??

Hello, in Safe Mode did you try setting a good resolution on the Display?
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons
See this great post by themachead on how to list the extensions in Safe Mode with System Profiler then compare to the extension folder!
http://discussions.apple.com/thread.jspa?messageID=10161377&#10161377

Similar Messages

  • Why does my iMac run fine in Safe Mode but has many problems when it isn't?

    If you take a look at my previous posts you will see that I have had the usual problems that many, many other iMac G5 1.8 20" Rev A owners have been recently experiencing (Kernel Panics, Screen Blurs, Screen darker at top more than bottom, etc)
    I have discovered that the only way to stop all the numerous problems that I have been having is to start the iMac up in Safe Boot Mode
    In this mode it has been running Perfect! No Crashes! No Screen Problems! It's been wonderful to get it back to normal after all the peristant problems I have had! The only thing being that you can't use sound in or out or the DVD Player with Safe Mode!
    So the question I would like to ask is:
    So does this mean that the problems I had before were just Software conflicts/issues and not Hardware ones?
    Cheers for your help
    Bob
    iMac G5 1.8 20" Mac OS X (10.4.3) 2 Gig RAM

    When you start up in Safe Mode various things aren't loaded at startup, Bob.
    Have a thinbk about which of the following may be involved in your own case:
    It forces a directory check of the startup volume.
    It loads only required kernel extensions (some of the items in /System/Library/Extensions).
    It runs only Apple-installed startup items (some of the items in /Library/StartupItems and /System/Library/StartupItems - and different than login items).
    Mac OS X 10.4 Tiger only: It disables all fonts other than those in /System/Library/Fonts .
    Mac OS X 10.4 Tiger only: It moves to the Trash all font caches normally stored in /Library/Caches/com.apple.ATS/(uid)/ , where (uid) is a user ID number such as 501.
    Mac OS X 10.4 Tiger only: It disables any Login Items.
    (from http://docs.info.apple.com/article.html?artnum=107392)
    Have a look at http://docs.info.apple.com/article.html?artnum=106464 for some more possibilities.
    You may find it worth while using System Prefernces/Accounts to creat a new admin user account and see if the problem persists with it. THis may help you narrow down the problem further.
    Cheers
    Rod

  • Hello I have imac (27-inch mid 2011) 3.1ghz intel core i5 1tb serial ata hard drive, amd radeon hd 6970m my problem is imac works fine in safe mode,but when you try to startup normal it's connstantly restart by it self.

    hello I have imac (27-inch mid 2011) 3.1ghz intel core i5 1tb serial ata hard drive, amd radeon hd 6970m
    my problem is
    imac works fine in safe mode,
    but when you try to startup normal it's connstantly restart by it self.

    in safe mode works perfectly,soon as I try to boot in normal mode it's keep restarting.on screen I don't  see any line vertical or horizontal picture look normal on safe mode.but unable to start normal it just restarting over and over.I try another HDD but same things happen,I replace memory but still same.works ok in safe mode but not in normal mode.I will try to post system error report.

  • My Mac starts up fine in safe mode, but freezes before the login screen in normal mode.

    I have the 2012 MBP, 4 GB of RAM, 500GB HD, 2.5GHz Intel i5 processor.  Everything worked fine, until one day it freezes all of a sudden.  I shut down and restarted.  The Apple logo appears with the loading animation underneath.  A few moments later, the animation disappears, and the mouse cursor appears.  This is normal.  What's not normal is that it stays on this screen forever.  I can't get to the login screen even after waiting sooo long.  Even restarting 5 times only repeats this problem.  I finally boot into safe mode.  I am able to login and get to the desktop in safe mode, but not normal mode.  Clearing every startup item in System Prefs, and in the startupitems folders does not solve the problem.  Disk utility says no problems.  Resetting PRAM does nothing.  Can anyone please tell me what I should do next?

    Do you hear the startup chimes?
    If so, then the startup disk may need repairing ...
    Launch Disk Utility located in HD > Applications > Utillities
    Select the startup disk on the left then select the First Aid tab.
    Click:  Verify Disk  (not Verify Disk Permissions)
    If DU reports errors, restart your Mac while holding down the Command + R keys. From there you should be able to access the built in utilities in OS X Recovery to repair the startup disk.
    Make sure to back up all important files first before using OS X Recovery.
    OS X Recovery does require a broadband high speed internet connection.

  • My mid-2010 27" iMac running Mavericks is fine in safe mode, but with normal boot up the screen goes haywire with some animation emanating from the apple menu area at top left of screen.

    From what I'm reading in these forums, this is likely an issue due to some 3rd party software / kernal conflict. I am going to run a diagnostic and perhaps someone here can help me evaluate the results and determine what software must be removed.
    It's hard to describe what I'm seeing on screen. I've never seen anything like it. I get a number of lines that begin at the top left of my screen, about at the apple icon, and they spread out in a triangular pattern from left to right, top to bottom across my screen, while the entire screen flickers uncontrollably. I realize that iMacs from this era have screen issues, but since I can boot fine in safe mode, this can't be a hardware issue.
    Any assistance is greatly appreciated!

    1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.
    2. If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. Backup is always a must, and when you're having any kind of trouble with the computer, you may be at higher than usual risk of losing data, whether you follow these instructions or not.
    There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
    3. Below are instructions to run a UNIX shell script, a type of program. All it does is to collect information about the state of the computer. That information goes nowhere unless you choose to share it. However, you should be cautious about running any kind of program (not just a shell script) at the behest of a stranger. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them. Ask for other options.
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    ☞ Copy a line of text in this window to the Clipboard.
    ☞ Paste into the window of another application.
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    ☞ Paste the results, which will have been copied automatically, back into a reply on this page.
    The sequence is: copy, paste, wait, paste again. You don't need to copy a second time. Details follow.
    4. You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode, under the conditions in which the problem is reproduced. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
    5. If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply. Don't log in as root.
    6. The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in the browser window, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
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B1&&C2 28;D12 15 37 25 8;A1 0 $((N1+2)) 3;C0;D13 0 $((N1+3)) 4 3;D23 0 $((N1+4)) 5 4;for i in 0 1 2;do D13 0 $((N1+5+i)) 6 $((N3+i));done;D13 1 10 7 9;D13 1 11 8 10;D22 2 12 9 11;D12 3 13 10 12;D23 4 19 44 13;D23 5 14 12 14;D22 6 36 13 15;D22 7 37 14 16;D23 8 15 38 17;D22 9 16 16 18;B1&&{ D22 11 17 17 20;for i in 0 1;do D22 28 $((N2+i)) 45 $((N4+i));done;};D22 12 44 54 45;D22 12 39 15 21;A1 13 40 18;B2 4;B3 4 0 19;A3 14 6 32 0;B4 0 5 11;A1 17 41 20;B7 5;C3 22;B4 4 6 21;A3 14 7 32 6;B4 0 7 11;B3 4 0 22;A3 14 6 32 0;B4 0 8 11;B5 7 8;B1&&{ A2 19 26 23;B7 7;C3 23;};A2 18 26 23;B7 7;C3 24;A2 4 20 21;B7 6;B2 9;A4 14 7 52 9;B2 10;B6 9 10 4;C3 25;D13 4 21 24 26;B4 4 12 26;B3 4 13 27;A1 4 22 29;B7 12;B2 14;A4 14 6 52 14;B2 15;B6 14 15 4;B3 0 0 30;C3 29;A1 4 23 27;B7 13;C3 30;D13 24 24 32 31;D13 25 37 32 33;A1 23 18 28;B2 16;A2 16 25 33;B7 16;B3 0 0 34;B2 21;A6 47 21&&C0;B1&&{ D13 21 0 32 19;D13 10 42 32 40;D22 29 35 46 39;};D23 14 1 48 42;D12 34 43 53 44;D22 0 $((N1+8)) 51 32;D13 4 8 41 6;D12 26 28 35 34;D13 27 29 36 35;A2 27 32 39&&{ B2 19;A2 33 33 40;B2 20;B6 19 20 3;};C2 36;D23 33 34 42 37;B1&&D23 35 45 55 46;D23 32 31 43 38;D12 36 47 32 48;D13 20 42 32 41;D23 14 2 48 43;D13 4 5 32 1;D22 4 4 50 0;D13 14 3 49 5;B3 4 22 57;A1 26 46 56;B7 22;B3 0 0 58;C3 47;D23 22 9 37 7;A7;C2 2;} 2>/dev/null|pbcopy;exit 2>&-  
    Copy the selected text to the Clipboard by pressing the key combination command-C.
    7. Launch the built-in Terminal application in any of the following ways:
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
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    Click anywhere in the Terminal window and paste by pressing command-V. The text you pasted should vanish immediately. If it doesn't, press the return key.
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    and press return. Then paste the script again.
    9. If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important. If you don't know the password, or if you prefer not to enter it, press the key combination control-C or just press return three times at the password prompt. Again, the script will still run.
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    10. The test may take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, there will be nothing in the Terminal window and no indication of progress. Wait for the line
    [Process completed]
    to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report the results. No harm will be done.
    11. When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
    At the top of the results, there will be a line that begins with "Model Identifier." If you don't see that, but instead see a mass of gibberish, you didn't wait for the "Process completed" message to appear in the Terminal window. Please wait for it and try again.
    If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
    12. When you post the results, you might see the message, "You have included content in your post that is not permitted." It means that the forum software has misidentified something in the post as a violation of the rules. If that happens, please post the test results on Pastebin, then post a link here to the page you created.
    Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
    Copyright © 2014 by Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Use Agreement for the Apple Support Communities website ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

  • IMac works fine in safe mode, extremely slow in normal mode

    Hey guys, I'm going nuts!
    My mac got stuck on a white screen, I ended up reinstalling Snow Leopard - now when I boot in normal mode everything is extrememly slow - when I mouse over the corner of a window (close minimise etc) is stops and takes about 10 seconds to make the rollover affect (putting the "x" in the red circle). When I move the mouse over anything on the desktop, it stops working for about 10 seconds as well. The mouse moves around the screen fine, and after a lot of painful (and very patient) clicking, I can transfer files around fine - happens just as fast as it would normally, windows open as normal etc.
    The most frustrating part is - everything works fine is safe mode! I'm typing this message on the mac now... I was thinking that I could transfer all of my data on to an external drive, but safe mode won't recognise them it took me about 10 minutes to select a folder and copy it to a hard drive in normal mode - I can't drag over a few items because of the mouse problem...
    I have updated my software - can't open the app store for some reason (I want to upgrade to Lion as well). No idea what to do...

    One of the primary difference between a safe boot and a normal boot is that all third party software is prevented from starting in the safe boot. So it sounds like something you installed on your Mac is causing the problems.
    Are you running any kind of AV software?
    If you are I would suggest that you start by unsintalling it. There are no virus on the Mac for the AV software to find any way so all it ever does is cause problems.
    Allan

  • Why does my imac start up in safe mode

    hi, imac starts up in safe mode. not every time,  only when progress bar appears at startup.
    I have had the Logic board replaced under warranty but it still started in safe mode.
    sometimes when it has started the wifi symbol is missing and no wifi, other times the sound is not there and the symbol is missing on the top bar.
    I then have to restart and it comes up good. sometimes the desktop top bar is not there until I press the mouse and then it appears.
    don't know what to do, any Ideas anybody?

    How often does this happen? Do you have automatic updating enabled in Software Update? If so, then it's possible those were firmware updates being installed, not startup in safe mode. In a safe mode startup you are initially prompted for your password before proceeding past login.
    If a firmware update was happening then the computer will restart on its own. If you interrupt the process then the update isn't installed, so it will try again on the next restart.
    Safe mode is initiated by holding down the SHIFT key at restart. It should not occur without user intercession.

  • My G5 tower will boot and run fine in safe mode, but...

    When I boot normally I get artifacting and it locks up. I replaced the video card, reformatted and installed a new copy of OSX, etc. Thanks!

    Get Temperature Monitor to see if it's heat related...
    http://www.macupdate.com/info.php/id/12381/temperature-monitor
    And/or iStat Pro...
    http://www.islayer.com/apps/istatpro/
    If you have any temps in the 70°C/160°F range, that's likely it.
    If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport in 10.4 & below, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
    Check the System Preferences>Other Row, for 3rd party Pref Panes.
    Also look in these if they exist, some are invisible...
    /private/var/run/StartupItems
    /Library/StartupItems
    /System/Library/StartupItems
    /System/Library/LaunchDaemons
    /Library/LaunchDaemons

  • No login screen in normal mode boots fine in safe mode

    I have got a compaq persaio f700 went to turn it on to normal mode  nothing I can hear the login alert but nothing
    however I can boot it up in safe mode with no trouble . when I go into device manager i find a yellow triangle next to coprocessor. How or where can I find the coprocessor for this machine I am running vista 32

    Hello @biggreg64 
    To get your issue more exposure I would suggest posting it in the commercial forums since the Compaq Presario F700 Notebook PC series is a commercial product. You can do this here Notebook - HP ProBook, EliteBook, Compaq, Slate/Tablet PC, Armada, LTE
    The support page for your product may be helpful in the meantime: Compaq Presario F700 Notebook PC series.
    I hope this helps!
    Thank you for posting on the HP Forums.
    Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
    Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
    The Great Deku Tree
    I work on behalf of HP.

  • Desktop stuck at black screen with cursor in normal mode but boots fine in safe mode after updates.

    After running some updates the other night my laptop stopped loading the desktop and just gets stuck at a black screen with a cursor after I log in to the user account. The only thing I can do from there is do ctrl+alt+delete, then log off or restart.
    I can't open up task manager. I tried creating another account in safe mode thinking there was an issue with the account but I still have the same issue. In event viewer I have two warnings one is
    event 6000 winlogon, The winlogon notification subscriber <GP Client> was unable to handle the notification event
    and event 4006, winlogon The windows logon process has failed to spawn a user application. Application name. Command line parameters: C:\Windows\system32\userinint.exe.
    As well as error event id 1003, CertificateServicesClient Certificate Services Client failed to invoke the Providers in response to event 512. Error code 2147956401
    and error 1001, certificate services client. certificate services client failed to load provider pautoenr.dll. error code 14001. I checked the registry and the path points to the right directory for userinit. I have tried running
    System Repair but no errors were found, and I ran sfc /scannow and no errors were found either. The computer did not have System Restore enabled and I do not want to restore to factory settings. I also ran registry mechanic and it found no errors. Any suggestions
    besides restoring to factory settings?

    Hi,
    We may try to reinstall Windows 7 Service Pack 1 for a test.
    In addition, let us perform the following steps.
    1. Click Start, Run, type lusrmgr.msc then ENTER.
    2. Select Groups in the left pane.
    3. Double-click Users in the right pane.
    4. Click Add, and then click Locations. Scroll to the top of the Locations dialog and select the local computer name, then click OK.
    5. In the Enter the object names to select field, type Interactive; Authenticated Users (separated by a semi-colon). Then click OK.
    6. Restart the computer.
    Or we can run the following commands from a command prompt:
    Net localgroup Users Interactive /add 
    Net localgroup Users "Authenticated Users" /add
    Kim Zhou
    TechNet Community Support

  • OSX Mountain Lion 10.8.4: imessage works fine in safe mode, but not in "normal" mode. Any hints?

    My iMessages does not work in "normal" startup, but it works perfectly in safe mode.
    Any hints?
    I have the same problem on a MacBook Pro 17" and on a MacAir 13" mid 2011.
    On my MacMini, iMessage work's fine.
    I'm using same apple ID on all 3 devices.
    Before update to 10.8.4, i had no problems.
    FaceTime also stopped working after update to 10.8.4.
    Thanks in Advance,
    Lars O.

    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac. 
    These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing. 
    Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects. 
    Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then copy it. The headings “Step 1” and so on are not part of the commands. 
    Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply. 
    Launch the Terminal application in any of the following ways: 
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.) 
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens. 
    ☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid. 
    When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign. 
    Step 1 
    Triple-click the line of text below on this page to select it:
    kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}' | open -f -a TextEdit 
    Copy the selected text to the Clipboard by pressing the key combination command-C. Then click anywhere in the Terminal window and paste (command-V). A TextEdit window will open with the output of the command. If the command produced no output, the window will be empty. Post the contents of the TextEdit window (not the Terminal window), if any — the text, please, not a screenshot. You can then close the TextEdit window. The title of the window doesn't matter, and you don't need to post that. No typing is involved in this step.
    Step 2 
    Repeat with this line:
    { sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|org\.(amav|apac|cups|isc|ntp|postf|x)/{print $3}'; sudo defaults read com.apple.loginwindow LoginHook; sudo crontab -l; } 2> /dev/null | open -f -a TextEdit 
    This time you'll be prompted for your login password, which you do have to type. Nothing will be displayed when you type it. Type it carefully and then press return. You may get a one-time warning to be careful. Heed that warning, but don't post it. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator. 
    Note: If you don’t have a login password, you’ll need to set one before taking this step. If that’s not possible, skip to the next step. 
    Step 3
    { launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)/{print $3}'; crontab -l 2> /dev/null; } | open -f -a TextEdit 
    Step 4
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    Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting. 
    Step 5
    osascript -e 'tell application "System Events" to get name of every login item' | open -f -a TextEdit 
    Remember, steps 1-5 are all copy-and-paste — no typing, except your password. Also remember to post the output. 
    You can then quit Terminal.

  • IQ770 will boot to Safe Mode, only black screen on normal boot

    I am working on an IQ770.  I just reinstalled Windows Vista and everything worked fine during load.  When the computer reboots it gets past the Windows logo and goes black.  There are the lines thru the screen while trying to load which tell of heat damage.  I can boot this machine up fine in safemode and no problem with video.  Is this a hardware or software issue and what is the solution?

    Reboot to VGA mode
    Set screen to 1024 x 768 (this is temporary) and then restart.
    If that works set it to the native display resolution of the built-in monitor (I don't know what the dimensions are).
    ... an HP employee expressing his own opinion.
    Please post rather than send me a Message. It's good for the community and I might not be able to get back quickly. - Thank you.

  • Early Imac 20" freezes on regular mode but works fine in safe mode, any ideas?

    Have a early 2006 Imac 20" that won't run in normal mode; freezes within minutes.  Run fine in safe mode, but safe mode won't play sound or allow exterior inputs.  In high fan state, don't know the name of the mode, but you hold the power button while plugging in power cord, the machine also runs relatively fine.  The machines been glitzy for years, developed the lines/colour patterns that's been mentioned in other forms/threads, but it still ran programs.  Took it to apple and they said the board is the issue and my machine is obsolete.  Fine, I just want to understand why it will run perfectly in safe mode; no lines, no freezing, all programs running...but won't last minutes in regular mode.  Also, if anyone has a way to play music...in bluetooth or appletv in safe mode, let me know.
    Thanks.

    Most of thee skinny on that...
    One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
    PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
    Reboot, test again.
    If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
    Check the System Preferences>Other Row, for 3rd party Pref Panes.
    Also look in these if they exist, some are invisible...
    /private/var/run/StartupItems
    /Library/StartupItems
    /System/Library/StartupItems
    /System/Library/LaunchDaemons
    /Library/LaunchDaemons

  • G4 powermac will not boot up nomally unless i boot up in safe mode help ?

    My G4 power mac will not boot up when switched on itakes several re boots and somtimes crashes.
    Will boot up in safe mode. but this only allows me to use some of the application software i need and not all of them.
    Can anyone help I thought it could be the hardisk but why would it boot up in safe mode?

    Boot from the Tiger installation disc 1 (hold down 'C' on startup). Don't touch the installer, go to the menu bar and select Disk Utility (I think it's in the Tools menu on Tiger).
    In DU, select your internal drive in the sidebar (the top item with the makers name and serial no.). Run Repair Disk.
    If problems are reported, run it again until the green message says the disc seems to be OK.
    Quit DU, quit the installer and restart.
    If DU says there are problems it can't fix, you may need DiskWarrior.
    Either way, let us know the results please.
    (PS; this is the Intel iMac forum - PPC are next door!)
    Message was edited by: noondaywitch

  • G5 dual 2ghz.  Been unplugged for a while. Powers up but no video or power to usb keyboard.  Boots up fine in safe mode, restart into normal mode ok. After shutdown, back to same issue.  What's happening?

    G5 dual 2ghz.  Been unplugged for a while. Powers up but no video or power to usb keyboard.  Boots up fine in safe mode, restart into normal mode ok. After shutdown, back to same issue.  What's happening?

    I keep seeing people ask and the advice to replace if it has been unplugged, but really have nothing to confirm that from my experiences.
    My experience is that a weak or dead battery can cause much more than date and time issues.
    I have seen it time and time again.
    Deal with used machines and you will quickly learn....
    I'll give no "recipe" or set list of symptoms, but the range of irregularities that can occur make it a quick and easy first line of troubleshooting, especially when the machine has been off the mains for a few months.
    Why fight mysterious maladies and troubleshoot with the knowledge that the PRAM battery is beyond it's useful life.
    Maybe they recharge?
    Not likely. They are chemically nasty, disposable, one way discharge batteries.
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