Help...MacBook Restarts and Restarts After update ...won't stop

Hello, I just ran the Leopard 10.5.1 software update on my MacBook and it restarted and now it just keeps restarting and makes the sound and it won't stop. Does anyone know what's going on?

That just happened to me. Help. I just did a regular software update, which included a combined operating system update, a QuickTime update and a security update. I restarted after the download as instructed, and now the computer keeps restarting. The little dial keeps spinning and the Apple restart bell goes off, but it never finishes. Then after a few minutes, it restarts itself again.
I've got a big college project in that computer and it's due Monday. Please someone help.

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       other end of the cable connected to your computer's USB port.
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       until the red slider appears, then slide the slider. Wait for the device to turn off.
              * If you cannot turn off the device using the slider, press and hold the
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Apple Java for Mac OS X 10.5 Update 10
Apple Java for Mac OS X 10.6 Update 17
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I would suggest you upgrade your computer's OS minimally to Snow Leopard 10.6.8.
Upgrading to Snow Leopard
You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.
Upgrading from Snow Leopard to Lion or Mountain Lion
You can upgrade to Mountain Lion from Lion or directly from Snow Leopard. Mountain Lion can be downloaded from the Mac App Store for $19.99.
If you sign into the App Store and try to purchase Mountain Lion but the App Store says your computer is not compatible then you may still be able to upgrade to Lion per the following information.
A. Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mountain Lion - System Requirements
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         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
         7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
     Are my applications compatible?
         See App Compatibility Table - RoaringApps.
     For a complete How-To introduction from Apple see Upgrade to OS X Mountain Lion.
B. Upgrading to Lion
If your computer does not meet the requirements to install Mountain Lion, it may still meet the requirements to install Lion.
You can purchase Lion by contacting Customer Service: Contacting Apple for support and service - this includes international calling numbers. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
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What next please?
Anyone else had this problem?

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(83104)

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wireless and Bluetooth not working
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Moooss wrote:
thank you for all but i have problem and sony mobile update engine setup 2.15 can't be download I need program sony mobile update engine setup 2.15 another this link http://software.sonymobile.com/ns/omsi/1/common/installfile/Sony_Mobile_Update_Engine_Setup-2.15.6.2...
Sony Update Software (also known as SUS) has been discontinued some time ago, and now the update process is entirely integrated in PC Companion and Mac Bridge. Just Download PC Companion from here:
http://www.sonymobile.com/gb/tools/pc-companion/
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A proud Sony User since 2002
If I was helpful to you, thank me by Kudos

Help...MacBook Restarts and Restarts After update ...won't stop

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