Will not reboot

Will not reboot. Paralyzed with endless looping color wheel and no opportunity for interaction. Any clues?

Hi peter121212,
Welcome to the Support Community!
To resolve the issue with your BlackBerry® Curve™ 9300 smartphone not rebooting, please try the steps in one of the following KB articles.
If you are using a Windows® computer, please try: http://bbry.lv/GI9beY
If you are using a Mac, please try: http://bbry.lv/J0UN1U
Hope this helps.
-FS
Come follow your BlackBerry Technical Team on Twitter! @BlackBerryHelp
Be sure to click Kudos! for those who have helped you.
Click Solution? for posts that have solved your issue(s)!

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Does it light up at all? If not, you could have a battery issue.
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Try sig's suggestion first, then, if that doesn't fix it, try some of the fixes here:
http://discussions.apple.com/thread.jspa?threadID=2653184&tstart=0
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Hello jh901,
After reviewing your post, it sounds like you have not been able to update the iPhone. I would recommend that you read this article, it may be able to help the issue.
If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support
Thanks for using Apple Support Communities.
Have a nice day,
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I was updating the software on my iphone4. I got a message saying that it could not update. Now my iphone will not reboot. It only shows a pic to connect to itunes, but nothing is happening when i connect it.

I was updating the software on my iphone4. I got a message saying that it could not update. Now my iphone will not reboot. It only shows a pic to connect to itunes, but nothing is happening when i connect it. How do I fix this?

If you're not a developer then you really should not have upgraded.
I'm unsure how you can fix this as you have already done a back-up on iOS 7 and apple don't support firmware downgrades.

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my pc will not reboot. I have a black screen with messge ERROR: no boot disc has been detected ir disc has failed. how do I bring pc up? I do not have a disc.lo

Hi,
This issue can be caused that the Boot.ini is corrupted. We have to enter WinRE by using installation media to do a startup repair.
If there is no disc and this is the OEM computer, please contact manufacturer or follow the manual book to do a factory restore and them try upgrade again.
Kate Li
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My Mac desktop will not reboot?

I shut down my iMac and it will not reboot correctly. I power it on and it will sit for hours with the apple logo in the middle of the screen with the small rotating circle underneath which makes it look like it is thinking.

Hello,
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, 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 at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
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3. Click the First Aid tab.
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http://docs.info.apple.com/article.html?artnum=106214
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Bootup holding CMD+r, or the Option/alt key to boot from the Restore partitirion & use Disk Utility from there to Repair the Disk, then Repair Permissions.

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Hello and Welcome to the Support Community
A flashing folder would indicate one of three things.
1. You trying to boot from a network device that's not available
2. Your iBook does not have a OS installed.
3. Your Hard drive has failed.
If it gets stuck on the Apple Logo, it means that it's trying to load a OS but having some difficulties.
Has this iBook been upgraded recently? New memory, hard drive, OS?
Which iBook do you own?
Do you know what version of Mac OS was installed on this iBook?
Try resetting the PMU and see if that provides you with any solution.
We are going to need further details of what iBook it is to assist you further.

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After upating from Lion 10.7.4 to 10.7.5, my MacBook Pro will not reboot. Why? What can I do about it?

I ended up having to visit an Apple Store. They claimed that the update must have aggravated an already corrupted hard disk drive. The solution was to wipe my hard disk (fortunately I had recently backed up on Time Machine). The "Genius" also claimed this was the first time he had come across the problem. Although he was clearly able to diagnose it straightaway, and the next person he saw had exactly the same problem with his Mac, and I saw an awful lot of customers queuing up with their Macs and iMacs looking very suspiciously like they all had the same problem! So clearly Apple know what the problem is but as usual treat customers as if they're idiots in order to cover up the problem. But at least the problem is now solved (although having to take at trip out and wait in a queue at an Apple store, and then restoring from backups is a painstaking inconvenience I could well have done without). All I can suggest is that you might as well take it in. None of the "solutions" on the Forum are remotely on the ball, and all Apple "Geniuses" have clearly been told what the problem is and how to fix it. Good luck!

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I have tried rebooting with and without the power cable attached.

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

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