Mac won't boot after installing some apps in XP.

I originally installed Boot Camp and XP Pro (with numerous apps) and everything ran great for about a year. Somewhere along the line, Windows XP became very slow and cumbersome. I decided to delete the partition and reinstall XP. That part went great. The problems started when I began to installed the same numerous apps that were on there before. Something happens to the Mac and it will not boot. All I get is the gray apple screen, but no turning pinwheel. If I go back into XP and do a restore back to the point before I installed whatever software caused the problem, It will sometimes allow the Mac to boot....never know for sure. Is it possible that one of the Mac updates has caused the Mac system to be vulnerable to what is installed on the XP side? I have my fingers crossed for some good results from Snow Leopard. Anyone had the boot problem like this though?

Startup – Computer Stops or Delays

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Mac won't boot after installing Kaspersky antivirus demo

when i turn on, the macbook pro has apple logo with spining grey thing but then it goes to just apple logo like normal and then it just stays like that instead of going into desktop?

I'm not sure that anything but a clone or Time Machine backup will work with Setup Assistant or Migration Assistant. Boot from the Recovery partition and use the Restore tab in Disk Utility. Drag your startup drive from the left pane (the indented icon that has your internal drive name) to the Source window. Drag the destination drive (the indented icon) to the Destination window. If you are copying to a drive with one partition this process will erase the destination drive. If you are copying to a partition on a drive with multiple partitions it will erase the partition you choose as the destination.
After the copying process is complete you can try booting from the cloned drive. Restart and press the option key after the startup chime. Keep the option key pressed until you see the Apple logo and spinning gear. Select the clone and click on Return to select it. If it boots run the Kaspersky uninstaller. Then download a copy of Carbon Copy Cloner (donationware) or SuperDuper! (free and paid versions). Use CCC or SuperDuper to copy the fixed clone back to your hard drive.
If the clone won't boot, and it probably won't, you will need to boot from the Recovery partition and choose to reinstall Lion. I haven't had to reinstall Lion or install it to an erased drive so if someone who has done so doesn't reply to this thread post a new question asking how to do it. It is my understanding that one is able to reinstall Lion over the existing installation or choose to erase the drive using Setup assistant to bring over your data from a clone. If you have to erase and install you will want to boot from the the Lion installation and clean off all the Kapersky stuff by searching for it (include invisible files in your search). Then you can use Migration assistant to bring your data back from your clone.
There is also a possibility that you can remove the Kapersky stuff by booting in single user mode. One you have your data copied to a bootable clone you could post a question about how to go about finding and removing the files in single user mode.

MAC WON'T BOOT AFTER INSTALL OF MOUNTAIN LION

I recently installed Mountain Lion to my macbook late 2009 model. Now it won't boot, goes into this cycle of trying to start and then off.

Try holding the Shift key when booting, to see if the system will start up in "Safe Mode" (by only loading essential services and extensions).

Mac Won't Boot after install

I have had Tiger for a few years now, So i finally decided to upgrade and bought Leopard 10.5 from an online website, I installed it on my mac and when i try to boot it up on my internal harddrive (where i installed it) all it does is just boot up.. go to a blue screen for 2-3 seconds and then it alternates between a black and brown screen with a beachball as the cursor.. So i've tried to reinstall and all that stuff and i even partitioned and installed it on my External 1T harddrive that i just bought and i am now booted up on that.. When i installed it on my 1T all that happened during bootup was a short delay at the blue screen 2-3 seconds.. and then the brown screen came up followed by a black screen which lead me to the welcome video/intro type thing. I've tried running the machine on my internal harddrive for several minutes but that did not provide any results either. I've tried to repair permissions, repair disk, erase and install all that stuff. The HD "appears to be okay" so i don't know what to do anymore...

Hi Dustin391;
Probably that he changed his mind.
It sounds from your postings that either this original Leopard DVD is not one or you have serious hardware problems if is.
Allan

Mac won't boot after power chord became unplugged accidently.

Mac won't boot after power chord became unplugged accidently.
I have a Mac Mini running very latest version of OSX. I was making a recording with QuickTime; when I needed to plug in a USB recording device into the back of the Mac Mini, as I pulled the Mac off my shelf to do this, the power cable came out and the Mac lost power.
I plugged it back in and powered up the Mac. I get the grey screen with Apple logo and the spinning grey wheel; then it goes to a blue screen (as usual) and I get the "starting OSX..." progress bar. When the progress bar finishes, I'm left with a blue screen only, no dock, no apple icon at top left, nothing across the top, no nothing.
So far, I've booted from the original disc and repaired the permissions as well as the disc, then re-booted, but same old blue screen.
I have another iMac G5 machine, so is there any way I can at least retrieve the important HD files from the Mac Mini to my G5, before throwing the broken Mac Mini away?
Can anyone advise please?

Hi, Nigel.
Not to differ with my colleagues here, but there's an important question that wasn't asked.
1. You wrote: "So far, I've booted from the original disc and repaired the permissions as well as the disc, then re-booted, but same old blue screen."Did Disk Utility report any errors it could not fix when you ran Repair Disk? I suggest you run the procedure specified in my "Resolving Disk, Permission, and Cache Corruption" FAQ. Perform the steps therein in the order specified.
2. You may also want to run the Apple Hardware Test that came with your Mini to be sure nothing shorted when the power cable was removed from the computer. I've seen it happen, hence I usually recommend removing the power cable at the wall before disconnecting the power cable from the computer. See my "Apple Hardware Test" FAQ.
3. Repair Disk gives your Mini a clean bill of health, the blue screen may be the result of some Startup or Login item that was corrupted due to the sudden power outage. My "Troubleshooting Startup and Login Items" FAQ can help you pin that down if such an item is causing the problem and may help you avoid and Archive and Install.
4. If you elect to go the Archive and Install route, see my "General advice on performing an Archive and Install" FAQ for some important tips on this process.
5. As FYI, this is the kind of problem that makes one glad they've implemented a comprehensive backup and recovery solution. For advice on the backup and recovery solution I employ, see my "Backup and Recovery" FAQ. Computing without a comprehensive backup and recovery solution is like driving without auto insurance.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

Macbook pro won't boot after installing update 10.9.3

macbook pro won't boot after installing update 10.9.3

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Mac won't boot after leopard install

hi - installed leopard on my imac but now my mac won't boot:
i have already tried the following:
1) safe mode - but won't boot
2) single user mode - ran fsck - said no issues
3) did target mode with firewire cbale to my macbook and ran disk utility - no repairs needed - and i can see all my files on original computer
4) reinstalled leopard from holding down options key - leopard installed again
but for all of abv - when i reboot i still get white apple logo screen and the spinning wheel...
any other way to get into safe mode - as that is only thing i have not been able to start....
thanks!
susan

tigerswim, welcome to Apple Discussions.
Did you already have Tiger installed or did you have Panther 10.3 installed? Tiger is not a free upgrade; you have to buy it & then update (for free) using the download updates from Apple. Also, you have to use a universal/retail install DVD (or CDs) to install Tiger. You cannot use the install DVD from another model Mac.

My Mac Pro won't boot after installing the latest update

Im running the latest OSX on my mac and recenty did a small updated that i believe contain a few security thing and bug fixs but when restarting the machine after the update it would not boot again after the apple logo has appeard apple script is displayed on the screen contain what i think is boot script failing to run. I have been able to boot the system in safe mode. does anyone have and solution for this as i realy don't want to reinstall the OS
Thanks

The most common cause for "Won't boot after software Update" is Directory Damage that existed before the Update, but was made worse by adding files during the Update.
The most common cure for that Directory Damage problem is to boot in Safe Mode, which takes five minutes to repair the disk, then comes up demanding your username and password, even if you normally auto-login.
Rarely, third-party add-ons are made obsolete by an update. In this case, booting in Safe Mode (with few Apple extensions and NO third-party extensions loaded) works fine, even if normal mode does not work.
Have you tried normal mode again after your Safe Boot?

Mac won't boot after updating to OSX 10.6.4

I am on my 3rd Mac that won't boot after updating to OSX 10.6.4. One MacBook Pro and two iMacs. I fixed one but the last two are getting the better of me. HD is not fried. Have tried every keyboard shortcut on startup, Disk Warrior via. Target Disk, repairing permissions in single user mode. The machines will not boot off of a CD or DVD and it will not boot up in safe mode. Something in the startup files is preventing startup. I am suspecting Sophos antivirus. I tried to uninstall it and trash it but I think it's still blocking something. Any help would be appreciated.

Got it! Not sure if removing Sophos had anything to do with it but here's what I did.
1) boot dead machine in Target Disk Mode (iMac)
2) boot good machine off Snow Leopard disk (MacBook)
3) install OS to dead machine- I found this next part very curious. When the install was complete the MacBook restarted as the iMac.
4) ran software updates
5) shut down MacBook then shut down iMac
6) rebooted iMac- all was good
I actually did this twice because a co-worker had the exact same problem on her MacBook Pro. Got both fixed today.
Thanks everyone for your help!

Mac won't boot after the latest update. It is loading the update and suddenly shuts down

My MacBook Pro won't boot after a minor update. The update was all fine and my Mac acted like it used to but when I tried to boot my Mac it just loads the the update then goes back to the Apple logo and then shuts down.
I hope that someone has got a solution because I do not want to restore my Mac for the 4th time.....

Hello JonasHallund,
We've an article that contains information and steps that can help get your MacBook Pro to boot again.
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/TS1367
Cheers,
Allen

Computer won't boot after installing latest iTunes update

Won't boot after the apple screen. Turns black and disk stops Help! Was running Mavericks.

Hi Neodoc,
Welcome to the Apple Support Communities! I understand that your MacBook Pro will not boot past the Apple logo. There may be a few troubleshooting steps I would recommend for this situation. The following article outlines the steps to perform to get this resolved for you.
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
I hope this helps,
-Joe

Early 2008 Mac Pro won't boot after installing 2nd DVD drive

All,
I purchased a Pioneer DVR-117D from Mac Sales and after installing it in my new refurbished 2008 Mac Pro it won't boot. My MP will boot if I remove the drive. According to the Mac Sales website this drive should work fine in my MP. Any ideas as to why this is happening. I literally just got my MP today and installed the drive. Is it the drive or the Mac Pro. Thank you all.

The drive was set to master, I switched it to CS before I left for work but haven't tried reinstalling it. I will try when I get back and let you know if it worked. Thank you again.

Win 7 won't boot after installing R&R 4.3...urgent help needed!

Hi everyone,
I'd be really thankful if anyone could help me with this problem. I've got an R61i and I'm running Windows 7 Professional. Got all the latest drivers and I recently installed the new Lenovo Toolbox. After installing the toolbox it recommended that I install Rescue and Recovery 4.3, so I installed it. Then I did a backup on an external harddrive and protected it with a password. After all that was done I installed some new Windows Updates and restarted the Thinkpad for the first time after the backup. All of the sudden whenever Windows is booting it also loads R&R. I've tried different boot-up options with F12 on startup...nothing. I also tried to recover my last backup through R&R, but the password I entered to protect my backup won't work in R&R and so it freezes the app after 3 tries. I don't understand why R&R is loading in the first place...there's nothing wrong with my software. Can anyone please help? I urgently need my computer to finish off some uni work before tomorrow.
Regards,
Pascal

Ok it seemed that my Windows partition was corrupted for some reason and since Lenovo hasn't come to publish a repair tool for Windows 7 yet I had no other choice than to boot from a Linux Live CD (Ubuntu). Backed up all my important files and then lay hands on the MBR myself...Anyways it worked so yeh, hope this helps anyone who's experienced the same problem until Lenovo makes that repair tool available

Macbook won't boot after installing Security Update 2008-007 (Intel)

I installed security update 2008-007 (intel) on my MacBook last night using Software Update, but now my machine won't boot at all. All I get is the gray start-up screen with the dark gray apple, but there's no spinning progress bar or anything. After 5 minutes or so, the machine auto-restarts, but again hangs on the gray start-up screen. It does this over and over again until I shut it off. I tried to boot into safe mode by holding down shift right after the chime, but it still wouldn't boot (again, not even a spinning progress bar). Can anyone please help me? I really don't want to lose my photos/movies, etc. I'll backup everything promptly if I can just get it to boot. Thanks.

Hi jared-lee, and again, a warm welcome to the forums!
First for safety, "Try Disk Utility
1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
This may or may not fix the problem, but may.
Do you have another Mac around?

Problem with HP Media Centre M7670.UK-a - won't boot after installing an update to Apple Quicktime

I just installed the latest update to Apple Quicktime (after an update message appeared on the screen). When asked if I wanted to re-boot the PC now, I clicked on Yes.
Now the computer won't boot. The power light comes on, then the disk drive light flashes for a moment, then nothing else happens and the PC starts to beep. The beeps are repeating, with 2 short beeps and one long beep. What do the beeps mean?
This question was solved.
View Solution.

Then a clear CMOS would be the next logical troubleshooting step.
Here is a link to your motherboard specifications.
The information on clearing CMOS is at the bottom of the document.
This is usually the last step before giving up on a motherboard.
The problem you are facing is motherboard hardware firmware related.
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

Mac won't boot after installing some apps in XP.

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