Software :: Won't Use G5 / Blue Screen Freeze Before Login
Jan 7, 2009
My iMac G5 (running 10.4.11) freezes at the blue screen, after recognizing the mouse, but before the login window. Some form of energy saver must be working because after the blue screen dims, moving the mouse will brighten it.
Steps I've taken:
Hardware test - everything passed (RAM, logic board, airport, display, etc...)
Zeroed the computer (7 times) and fresh reinstall
I CAN boot up in Safe Mode, Single User Mode, and Verbose mode. I can boot from CD, Knoppix CD, and into Target Disk mode (thank god for this MacBook I'm on now...)
Here's the system log (I've edited in comments and out personal info):
// reboot and power on
[SIZE="2"][FONT="Tahoma"]Jan 6 21:19:02 users-imac-g5 shutdown: reboot by user:
Jan 6 21:19:02 users-imac-g5 SystemStarter[102]: authentication service (110) did not complete successfully
// gray apple screen with spinning progress bar
Jan 6 21:19:35 localhost kernel[0]: standard timeslicing quantum is 10000 us
Jan 6 21:19:35 localhost kernel[0]: vm_page_bootstrap: 124630 free pages
Jan 6 21:19:35 localhost mDNSResponder-107 (Mar 20 2005 20: 31:47)[38]: starting
Jan 6 21:19:35 localhost kernel[0]: mig_table_max_displ = 70
Jan 6 21:19:35 localhost kernel[0]: 89 prelinked modules
Jan 6 21:19:35 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
Jan 6 21:19:35 localhost DirectoryService[36]: Launched version 1.8 (v346)
Jan 6 21:19:35 localhost kernel[0]: The Regents of the University of California. All rights reserved.
I woke up this morning and my iMac G5 (w/ Leopard) was frozen. I restarted it manually, but it would freeze on a blue screen without loading the OS. It can start up fine in safe mode, but that's it! I've tried repairing permissions and zapping the PRAM - any other ideas?
What can I do in Safe Mode that might fix my comp? I haven't recently installed any applications, and I have all "open at login" items turned off.
1. When closing the lid or pressing the power button the computer freezes, the fans start spinning fast it stays like that until it drains the battery. This happens every time.
2. Start-up times are very long, like 3 or 4 minutes. This also happens every time.
3. Now after a fresh snow leopard install it doesn't even start up completely, as it stays showing a light blue background and I can hear the music of the introductory animation.
4. Also, the keyboard is unresponsive at the login screen, but the mouse cursor moves and the display goes to sleep normally. Clicking anywhere with the mouse also produces no effect.
5. It seems to work OK in safe mode.
The macbook worked ok with the factory installed Tiger. The SL DVD is OK, as its installation has been tested on another Mac. The machine's advanced hardware test passed successfully. Resetting Pram and SMC did not solve the problem.
Whenever i try to "shut down" my MBP, it will freeze at the blue screen with the spinning wheel (that keeps spinning like 'eternally')! Any idea how to solve the problem? I tried booting from the installation disk and repairing disk with "disk utility" but to no avail. Have also tried repairing disk permissions... Any idea how else should i tackle this problem? Currently i can only switch off my MBP by holding the power button (forcing it to shut down).
Info: MacBook Pro, Mac OS X (10.6.8), 15 inch 2.0 GHZ
Today my imac done something wierd. When powering on it got to the blue screen before the password login and it just froze on the blue screen. I done a hard restart and rebooted a few times. Didn't do it any more after that.
I love customizing my Mac and tinker with its preferences so I guess I had this one coming, although it's my first major mistake.
I'm running Mac OS 10.5 and I downloaded a loginwindow.bundle from deviantart to customize my login window but I realized too late that it was for Snow Leopard. What I ended up doing was:
- I replaced the original loginwindow.bundle with the one I downloaded; and
- I replaced the original com.apple.loginwindow.plist with the one included above.
- Thankfully, I made a backup of the original files which I kept in my Documents folder.
I then logged out and ... the login window never appeared, just a black blue screen and that round loading thingy at the bottom. I'm sure that's the only cause of my problem. (If it helps, I don't have autologin enabled, so I have two accounts to choose from before I can login.)
I've tried booting in single user mode and in safe mode but neither works.
I've narrowed down my options.
1. Use some commands in single-user mode to replace the new loginwindow.bundle and loginwindow.plist with the old ones, which are in my Documents folder (like in Terminal). Thing is, I don't know how to do this, if ever it's possible; OR
2. Use my Bootcamp partition (thank God for Bootcamp!) to manually do the abovementioned option with Transmac, which I already tried. Unfortunately, I can't write to my Mac OS partition since it's read-only, which leads me to the problem of having to change it to read-write via single-user mode.
My Mac OS x is stuck on the blue login screen. I have tried unplugging, cmd-alt-p-r which still takes me to the login screen, held down until I heard the chime three times as suggested but went to login screen. Tried going in to safe mode by holding down shift key at start up still took me to login screen. Tried to fix with boot disc and nothing comes up. By the way I wasn't really doing anything. Was checking my emails but hadn't even clicked on one when the screen totally froze. When I powered down it came back to email page. I had to force a shutdown several times and no can't get past login screen.
I have a macbook with tiger software. I used it recently and the internet and itunes were intermittently freezing. I shut the computer down and when i tried to turn it on again, it gets to the logon stage,recognises my logon, but then it goes to the blue screen and nothing happens.
After upgrading from Leapard to Snow Leapard a few weeks ago on my macbook there has been a blue screen flashing before the login screen. Is this normal? Or am I being peranoid? could it be that i installed app cleaner? I unistalled app cleaner and it still did the same.
After what seemed to be an improper shutdown my Macbook will not boot. I have tried using fsck to no avail. Booting to the leopard dvd causes it to restart. Flashing PRAM doesnt seem to help and it will not boot into safe mode.
I created a new user the previous evening and shut the computer down as normal, now when i start up I get nothing but a blue screen no login in screen nothing. I tried going into the command as root, have done fix disk errors no problems there, then tried lunchctl load/Users/System/Library/LaunchDaemons/com.apple.... plist cant rember the bit in between. I did this from the apple website, but all i get is no file to load, so anyway continued to do ls users/ get the names and tried reseting the password for the login's and i get a odd error. I have no idea where to go from here, as i cant find the original discs, can i use mybrothers os x 10.5 discs to re-install and save the files i want to keep and do a clean install?
I have faced some known symptoms of a problem for which I was not able to find any sound resolution. I have an account with which I am unable to login. When I enter login details for a session, the system immediately kicks me out showing a blue screen, logs out and goes back to the login window. An interesting observation during a sudden logout is that I spotted a vague image or window of an open application (probably Finder) at the background which is like 95% transparent in comparison to the Mac's desktop and therefore barely visible. The white-ish edges of that window is more distingushable though for a short duration.
I can ssh to this username and work remotely. But there is another username which has not been affected with this issue and works fine. The console logs show that loginwindow process is crashing everytime. Look at the output below. There have been notes with similar effects but with specific causes (e.g. MS Excel 2004 inc Rosetta, Blootooth peripherials, eBook Studio, Photoshop CS3 etc.) which might be related cases.
[URL]
I have already tried booting in Safe Mode, deleting loginwindow.plist without success.
I have an iMac G5 1.8Ghz and Today when I logged in, it just froze on the apple OS X background. I waited 2 minutes, and nothing happened. It was weird because it's the first time it happened. Anyway, I turned the iMac off and re-tried. It did the exact same thing. So I turned it off, unplugged everything, waited around a minute, plugged it all back in, and it worked fine.
But yeah, just trying to work out why it would do that... because this is going to my brother and I don't want it to just crash when I give it to him.
I have iMac 27 and screen problem on start up i have blue vertical lines, when it start i have a lot of blue dots and nothing else. when I connect outside monitor its showing the same.
Just installed lion and still the same problem when it starts blue dots, when startup in safe mode loads of blue lines and dots on the screen.
I have a 2007 MacBookPro. shortly after installing Lion 10.7.3 and VectorWorks 2011 I started getting vertical blue and black lines across my screen on startup. They remain with in the apple while the computer boots and the everything freezes. I tried all of the usual fixes, recovery, safe boot, reset PRAM, battery, etc.When I tried to boot of a system disc I get a message sating that I need to restart my computer. Upon restart same problem occurs. 2 months ago I took the whole thing apart and cleaned out the guts. Reconnecting all cables back together, I came across, what I think is the camera cable. Since my camera has been erratic, i decided to test the problem with it connected and then disconnected. Connected same problem. Once i unplugged the camera everything went back to normal, until now. The same problem returned. I cleaned out the guts again. This time I unplugged the hard drive to try and boot off the C drive, but still get the same problem. This morning It decided to boot up. I was able to copy my essential files onto an external drive.
while i am using my macbook the screen will suddenly go blue and flash between different blue colors like it is trying to work. sometimes it comes back on but most of the time it stays like that. I have to force shut down with the button and then restart...about half the time it is still flashing blue after the restart and if it does work, it goes blue eventually.
dont know if its a problem with the screen or what because the computer continues to work...if there is a movie on, you can here it in the background and the screen just flashes.
when i had leopard i had changed my login wallpaper to something else besides that old pic but when i upgraded to snow leopard it is just blue and it wont change.
Hi! Im new to the forums but i really need help with something and i was hoping someone here could help me out. So I just installed Tech Tool Deluxe onto my macbook and then shut it down later. I went back to use it again and when i turned it on a login screen appeared asking me to put in my password. I did that and the screen turned blue (looking like it was loading) and then went back to the login screen. Every time i put in my password it just takes me back to the login screen. I have had my mac for a while and i dont want my hardrive to get wiped out so what do i do? Thank you for looking
Just got my new macbook pro last week, been having some problems ever since i changed my ram to Kingston 1066MHz DDR3, supposedly to be compatible with the MBP.
I have experienced horizontal lines of flickering and freeze of my entire system, which requires me to do a hard reset. I have recorded a video of it here.
I have also experienced similar type of freeze, but the screen pixels just cluster together at the top 20% of the screen, much like this.
I have ALSO experienced my keyboard totally not responding when i try to recover from a password saved screensaver!! The mouse is working fine, but the system just can't detect any keystroke input, forcing me to shutdown forcefully again!
I don't have time to send in my MBP as i need to work on it, and cannot do without a machine, any ideas how to resolve this?
May i also know which rams are compatible with Mac?
never had a problem with a freezing mac in 5 years of mac use so wouldn't like it to start now. Whilst using firefox this morning it froze, force quit wouldn't work, entire screen froze. Keyboard shortcut wouldn't allow me to shut down, so I had to shut down via the on/off switch.
When I came to switch it on again it loads up to the log in screen, the mouse moves around the screen but when I click on my username nothing happens. I've taken out all USB cables, switched wireless keyboard and mouse on and off etc, restarted, no joy. Next I tried to startup with the c key and install disc, but again I got to the log in screen and nothing happened. I'm assuming as I can't log in and get to a desktop that is why it's not allowing me to start with the disc?
On my late 2011 imac 21.5" I have been getting a consistent problem since the last OS update. After the screensaver comes on, or, if left to sleep by it's own devices, either my screensaver freezes or the gray screen won't recover from sleep. If I move the cursor with the trackpad it clears the gray screen where the cursor moves around. I can usually clear enough that I can hit the login button and log in after pushing the power button. This is a new phenomenon since the latest OS update.
I am looking at purchasing an Ibook G4 but the description of the item includes this:"When you switch it on it begins to load up i.e. the blue screen with the Apple logo, but then the screen goes black or flickers. Said friend has kindly wiped the hard drive for me so now when you switch it on it makes the �opening� noise then you get a blue screen with alternating �?� and the Finder logo."
I have a feeling this may have been a temporary fault with the screen connector being loose and possibly damaged.But i assume the alternating "?" and the "finder logo" is simply a lack of OS?
just installed 10.5.6 on their last gen. iBook.She left the iBook plugged in to the mains and came back to find that the iBook was alternating between the grey Apple screen and a light blue desktop screen where she could see the cursor. Sometimes it would also switch to a blue screen without a cursor.
I've tried holding shift during startup - no effect. I've tried rebooting NVRAM - no effect.
After windows is installed a Blue screen appears with cursor on screen but it freezes completely.I can fix this by restarting my mac , then once windows restarts i insert the Mac OS disc , select the disc within my computer but the following message appears "Package requires new version of installer"
I have a problem with my MacBook screen. Everytime I try to turn on the MacBook, the blue screen appears for a second and then everything gets dark (but I can see that the computer turned on normally, it's just the screen that gets almost black, without light). Sometimes only the right side of the screen is blue and then gets dark just like the left one. I was looking for the problem and I perceived that the left side seems to be loose and I can't fix it. What should I do?
grey screen no apple followed by blue screen with vertical lines. Graphics and logic board replaced <6 months ago. What to do? I held down shift, it gets HOT HOT and makes noises. (for safety mode) followed by a blank grey screen and blue screen. Then tried the other way (I think it's command alt delete? I don't remember) and it turned from grey (no apple symbol) to blue blank. Then third time, grey followed by blue with vertical lines, not blocky clear lines that you can see if you are close to it.
New to Mac computers. When trying to open computer after being in sleep mode, I clicked the mouse to open the password screen, & a blank blue/black screen appeared & the mouse timer( colored circle) appeared, as if to be waiting. I had to unplug the computer to reboot it. This has happened twice in 2 days.
