Mac Pro :: Computer Froze And Will Not Start Up
Jun 29, 2010
MAC PRO 2.8 quad-core Intel
4 x 1GB
2 X 500GB 7200 ATA
ATI RAEDON HD 2600 XT 256MB dual link DVI
16X superdrive
Computer froze today, it was running fine this morning. I went to restart it and now it won't restart. No history of this happening before. It will shut down if I force it, but it will not boot up. After I turn it on, it starts up as normal with a chime and goes to the grey screen with the Apple Logo and spinning wheel. But then the Apple Logo becomes a Circle with a Slash through (international "no" symbol), the spinning wheel remains spinning. And then it just stays like that wheel spinning and "no" symbol. I've tried starting it holding down "shift", holding "option-command-p-r", holding "d", holding "c", and holding "option"... with the same results each time. I ran Disk Warrior on all the disks and tried staring up with no external drives and I've cleaned it thoroughly of dust.
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Apr 17, 2010
Yesterday my mac (powerbook, running on 10.4.11) froze and after I reset it, Safari doesn't seem to load any pages, it just stays in a "loading" state. Firefox, however, seems to be working fine (as does Mail) so it appears to be a problem with Safari. I tried the following:
1) Restart computer
2) Reset safari
3) Use some dns changer remover utility (saw this in another post, and downloaded utility from CNET, but it failed to find any issues).
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Mar 7, 2009
I just received my refurb 2.8Ghz 24" iMac today. I have been setting it up and transferring files to it for the last few hours. I just installed 4GB of RAM from Crucial to upgrade from my 2GB that came preinstalled. I opened Hulu and started watching a video full screen while I was working on something in the same room. All of a sudden the playing video froze and there was a loud high pitched squeal coming from the speakers and some crackling, followed by another high pitched squeal from the speakers and then the computer froze.
I know it wasn't a fan noise or a hard drive noise, it was definitely a high pitched audio tone and crackling from the speakers when it hung up. The only way I could make it stop is to hold down the power button and turn it the iMac off. I wonder if it could have been my photo collage screensaver kicking in while the hulu video was playing fullscreen that caused something to lock up? It seems like it was in the timeframe from when I walked away from the computer to the time it crashed.
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May 27, 2012
I have a 2011 Imac and was on the youtube watching a music video when all of a sudden my screen COMPLELETY froze, and a loud clicking noise kept repeating itself nonstop from the speaker, I'm not sure if the sound was coming from the song OR my computer actually making the noise itself. I held down the power button and waited a couple minutes and restarted. The white screen came on with the apple logo, but all of a sudden it completely froze, I waited a few minutes and powered off. I now waited 5 minutes and restarted and it WORKED! Everything seems fine?
Info:
iMac
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Jun 21, 2012
computer won't start. tried unplugging and holding in start button. After about a half hour and unplugging a few times, finally got it going. Imac G5
Info:
iMac, MacOS X (10.5)
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Mar 3, 2012
the laptop will not start up. when it sometimes start it i see the question mark. why. and how to start up the laptop
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Apr 18, 2012
Ever since looking for viruses and installing the new java fix, it takes about 3 minutes for the sign-on screen to appear. I went to utiliites and all is ok with permissions and the hard drive.
Info:
Mac Pro, Mac OS X (10.7.3)
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Feb 6, 2009
I am new to Mac, I always had PC's, but yesterday a friend gave me a 20th anniversary Mac, he said it's old and haven't been used for ages. Well, I pulled it out of the box and thought this is a Cool Piece of Computer, plugged it in, but couldn't find the" On button". I did some research on the net and watched a couple of Video's on YouTube, first I was very surprised that this is some kind of fancy Mac, certainly looks good, keeping in mind the age, this was for sure way ahead of his time.
Long story short, the "Start button" on the right side top corner of the keyboard does not start the computer, to start it, I have to unplug the keyboard and reconnect it. After this is done, it appears to me that the thing is running fine, sound, video, tv, radio, touchpad, all the keys from the keyboard, everything works great besides starting the machine. One more thing, the Bios battery is bad, I had no change yet of getting a new one, could this be the reason?
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Mar 20, 2009
well i bought a refurb macbook with 250 gbs hard drive, it came with 215 cus of the os etc. now i have 208 gbs. my question is when does hd space start to slow u down
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Apr 28, 2010
I was just using my 13" MBP and using Parallels when the whole computer locked up. I had to turn off the computer by holding down the on/off button. Unfortunately, now the computer will not start up in OS X. Interestingly, I had linked my Windows side of the computer so that it can be opened in Parallels or Bootcamp; I can get the Bootcamp Windows side to start up with no problems (I'm using it now to write this).
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Feb 25, 2008
My comp. has worked perfectly, Then I installed some updates, Itunes i think? And the comp. Shut down, and when it restarts it works for a min or two, then freezes, and i get the beach ball, that just spins around and around forever.
if I don't try to open anything, or do anything when i restart it, it will just shut down, and restart, then when it comes to the Grey screen with the apple and the little circle below it, the circle looks all pixilated, and just freezes
that is the version its on (Taken two days ago, and sent to a buddy for other reasons completely)
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Feb 2, 2012
I am new to MAC and in this forum.Lately I've had problems with my Mac Book Pro (15 "OSX 10.7.3) especially now that I made the OSX update. Is inhibited if the computer is idle and we must force it off, holding down the power button.Â
When the computer is restarted, usually three things happens:
1) The computer boots normally
2) Shown instead of the apple icon, an icon with a "-" and never starts, or
3) It shows a progress bar process that takes a long time in advance and then boots normally.I need to know how to do a clean install and reinstall the programs useful, considering that I have no Lion operating system on a DVD, as this was bought from Apple online store.
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Apr 5, 2012
I just got my computer after the apple store put a new display card in. I have to start the computer two times before the pictures shows up.
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May 11, 2012
Powermac G4 MDD Originally had 2 hard drives -- 60GB (jumpered as master) and 40GB (jumpered as slave)
The 40 GB failed and the 60 GB was diagnosed as failing so I purchased used Seagate 160 GB ATA/100 Hard driveÂ
I installed the new 160 GB Hard drive in place of the 40 GB HD and used SuperDuper to clone the still working 60 GB drive. The files were all copied to the drive and the drive showed up on the desktop as a hard drive icon, and it was recognized in the System Profiler. However, I could not select it as the startup drive from the System Prefs window.Â
I then took out the 60GB drive and replaced it with the 160 GB drive jumpered as cable select and now the computer won't start up (flashing question mark).Â
Info:
G4 MDD 867, Mac OS X (10.4.9)
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May 30, 2012
So I unplugged my Mac Book Pro, left town for a month, it started for a bit, then screen went blue. I shut it down, and now it will not restart it makes a beep sound I've never heard!Â
Info:
MacBook Pro, iOS 5.1.1
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Jun 11, 2012
I can't seem to start my computer because it freezes
Info:iMac, Mac OS X (10.6.8)
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Jun 14, 2012
When I shut my computer down it won't start up again unless I physically unplug it and plug it back in again.
Info:
iMac, Mac OS X (10.6.8)
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Feb 21, 2009
My roommate just lost his data, so I realized I needed to back up. I plugged in an external hard drive (it was an internal that we put into casing bought from OWC, if that matters). I wasn't thinking about Time Machine but it displayed a message, so I said yes, backup onto the hard drive. Then while it was backing up I was just reading a document, the machine crashed. I swiveled my desk to get something and this caused the external hard drive to fall, for a second it was dangling from the USB. (I'm not sure if that's relevant but.)
I first restart (held down the power button), since nothing was happening. At that point the hard drive was making a weird rhythmic clicking sound. Then it wouldn't start up! I tried this twice. Blank gray screen. I reset the PRAM (was that a bad idea?) and when it started again, I get a folder icon with a blinking question mark, over a gray background. Then I freaked out because this was what happened to my roommate, so I haven't touched the computer since.
What could have gone wrong? What to do now? (Local help centers only open on Monday..) Is it worth it to take a train for an hour to go to an apple store right now?
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Apr 17, 2012
It does not register when new programs are opened. They open, but there is no indicator light under them. Programs that are not open anymore still have an indicator light. Also, I don't have any notifications for email or other messaging programs even though I do have new emails and messages.
Info:
MacBookPro, Mac OS X (10.7.3)
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May 14, 2012
After several years of working properly, my display suddenly doesn't recognize the mac when starting up. If I turn off the power strip, turn back on and restart, the computer it works fine.
Info:
Mac Pro (Early 2008), Mac OS X (10.5.8)
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May 30, 2012
Why does my computer sometimes startup in safe boot
Info:
iMac Power Pc, Mac OS X (10.5.2)
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Jun 11, 2012
When I plug in the power cord it is not connecting and therefore not charging the battery. Battery is deal and the MacAir will not turn on.Â
Info:
MacBook Air, Mac OS X (10.7.4)
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Jun 18, 2012
Lately whenever i start up my computer the clock changes to 2000 and some random time, there are also about 5 pop-ups from finder asking me if i want to allow programs. I fix the clock problem by going into the time settings and click the unlock button but i have to do this everytime i start up my mac. I attached a screenshot of what pop ups come up.
Info:
MacBook Pro (13-inch Mid 2009), Mac OS X (10.6.8)
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Jun 23, 2012
Whenever I start up my Computer, many applications load up also, especially Microsoft programs and I have to close them or it makes the desktop a mess.
Has anyone out there experienced this problem and/or have a fix for this?
Info:
iMac, Mac OS X (10.7.2)
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Jun 26, 2012
When I start up my computer everything looks normal, all icons are on the desktop and my cursor is able to move. The problem is I can't affect any of the icons on the desktop (folders, files, etc)-every thing is frozen. After about 3 minutes it unfreezes and everything then works. what is the problem?
Info:
mac pro
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Aug 26, 2014
How can I restart my Macbook Pro if I can't remember the computer's name at start-up? I do remember the pass word.
Info:
MacBook, Mac OS X (10.5.8)
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Oct 21, 2010
i have a 2 year old Silver Macbook 2.4 (i think!) anyway i havent touched it for ages because of a problem. It wont start up! Heres what happens: I turn the computer on (it can still charge) it starts to go into its white loading screen with the funny rotating loading wheel and all of a sudden this DOS like command prompt pops up with what looks like gibberish computer talk i dont understand except the word error. Then straight after the command prompt shows this transparent big window comes up with a power button logo and says " Please Restart Your Computer" problem is i do restart the computer and it does this everytime i cant get to the profile screen or anything. Any help is appreciated i jus came to you guys b4 the shops cause i thought maybe i could fix it. Im thinkin its a software problem hopefully i wont have to reinstall OSX leopard
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Nov 10, 2010
I have safari set to open up when I boot up my computer using the login items for my user account.
But when I start up my computer, instead of opening up a window, it starts up safari in the dock, but never actually opens a window. When I click on the icon in the dock the page will open up. Its acting as if I hid(CMD+H) the page. I know safari is open and it loaded the homepage, but the window wont actually open.
I've tried it on two different computers, Macbook pro, mac pro with same issue on both.
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Aug 28, 2009
this isn't an isolated issue - there are threads about this over at Apple and InsanelyMac: I'm unable to install Snow Leopard. When I run the installer, it'll tell me that "Mac OS X cannot be installed on "Macintosh HD", because this disk cannot be used to start up your computer" (Macintosh HD being my OS X volume, obviously). I'm seeing this issue on a relatively new 1.8ghz Macbook Air with a 128gb SSD - however, as far as I can tell from the other threads, the problem also affects iMacs and Macbooks.
Some people apparently attributed the issue to a PGP installation they had on their harddrive. Others found a file called backup.backupdb in their root - deleting it fixed the problem. However, most people don't have any of that installed on their computers and the upgrade still won't work. - if anyone has found a solution to the issue, please let me know :-( I'm stuck here. I don't have an external drive for the MBA and booting from a network drive has never worked on this particular machine - so I can't do a clean install, either.
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Nov 10, 2009
When i start the computer and the grey screen comes up with the apple logo etc., a grey "loading" bar has started appearing in the bottom of the screen. Takes a few minutes for it to go away. In the meantime the computer gets very hot and the fans are up to 6000 rpm. Then the os starts up, and I cannot download anything, due to the fact that it thinks my harddrive is full, though i have more than 100 gb of free space.I cant even download the 10.6.2 now due to the harddrive appears to be full
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