I've updated to yosemite from Mavericks, but since i can't connect to the internet I used my time machine back up which was march 2013. Now my macbook pro won't start and ends with a prohibited ted sign. Any suggestions pls.

I've updated to yosemite from Mavericks, but since i can't connect to the internet I used my time machine back up which was march 2013. Now my macbook pro won't start and ends with a prohibted sign. Any suggestions pls.

Install or Reinstall Yosemite, Mavericks, Mountain Lion, or Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
How to Clean Install OS X Yosemite
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

Similar Messages

  • Installed Yosemite...now my MacBook pro won't start up. Keep showing "Kernel Panic!" HELP!

    installed Yosemite and now my MacBook pro won't start up. Keeps showing "kernel panic"
    PLEASE HELP ME!

    If you can't start up and log in in the usual way, try in safe mode.
    During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally log in 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.
    Log in as an administrator to carry out these instructions. If you have only one account, you are the administrator.
    ☞ If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
    Safe mode is slower than normal, and some things won’t work at all.
    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 start in safe mode.
    If you're able to log in, launch the Console application in any of the following ways:
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
    ☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
    In the Console window, select
              DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
    (not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
              View ▹ Show Log List
    from the menu bar.
    There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.
    I know the report is long, maybe several hundred lines. Please post all of it anyway.
    In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
    Please don’t post other kinds of diagnostic report.

  • I just downloaded the latest OS upgrade and since I can not connect to the internet using my cellular data plan.

    I just downloaded the latest iOS.7 upgrade on my ipad2, and since I can not connect to the internet using my cellular data plan.  I have checked my data plan and it's both current and over 2GB remaining.  However the indicator shows no service, thus would be the best steps to recover.  Thanks much for any support that can be provided.

    Hello Kmart2@3
    Check out the troubleshooting article below to get cellular to start working again. 
    iPad (Wi-Fi + Cellular Models): Troubleshooting a cellular data connection
    http://support.apple.com/kb/TS4249
    Regards,
    -Norm G.

  • I was messing around with .kext files in the MacintoshHD and now my MacBook Pro won't start up.

    I was messing around with .kext files in the MacintoshHD and moved the system.kext and two others to my desktop and deleted the originals and now the MacBook Pro won't start up. All I get at start up is the apple icon then a bunch of text shows up part of which says Mac OS version: not yet set. then the apple icon turns into the power icon and tells me to turn off the computer. I've tried reinstalling from the install DVD by holding down option when powering on and selecting the install DVD and it just goes to a white screen with the apple icon and stays like that. I didn't have the disk utility on my Mac before this happened because I deleted it to make room on my computer a while ago so I'm not sure if that's why it won't load the install DVD but anyone who knows the solution to this with out going to get it repaired would be greatly appreciated. Thank you!

    Never mind my dad just found the original install DVD and that worked. Before I was using an install disc that Apple sent me for another issue I was having, but thanks for replying so quickly and trying to help on this Thanksgiving day!!!

  • I can't connect to the drive on my airport time machine and am receiving the message: "AirPort Time Capsule" can't be opened because the original item can't be found.

    Time capsule has been working perfectly for months.
    Suddenly I can't connect to the drive on my airport time capsule and am receiving the message: “AirPort Time Capsule” can’t be opened because the original item can’t be found.
    Time machine appears to be still backing up (last backup within the last hour), but drive is not visible and I have files stored on it.
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    What OS are you running??
    It is very typical Yosemite issue.
    1. In airport utility does the TC show up.. if so click it.. and see the summary page which will include its IP address. That is what you are after.
    From my screenshot you can see the TC address is 192.168.2.57
    It might well show up briefly after a reboot or in ipad / iphone version utility. Yosemite is hopeless. The airport utility hardly works.
    2. In Finder use Go, Connect to server.
    Type in SMB://192.168.2.57 (replace with IP you discover).
    If it is possible it will request a password.. type that in and DO NOT FORGET.. to store it in your keychain.
    This will work until the TC changes IP which won't happen if it is main router.. but will happen if it is bridged.. so you need to tell me the whole network setup.
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  • TS3423 17" macbook pro won't start blue file with question mark is all that appears on the screen

    My old macbook pro will not start up. Worked fine yesterday, today all I gat is the startup sound and a blank blue screen. After a while the screen shows a file folder icon with a question mark in it. Any ideas

    Question (?) Mark, Blinking Folder, or Gray Screen at Startup
    These are related but not identical issues. Their causes are outlined in Intel-based Mac- Startup sequence and error codes, symbols. Solutions may be found in:
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    Mac OS X- Gray screen appears during startup
    In most cases the problems may be caused by:
    Problem with the computer's PRAM - See Resetting your Mac's PRAM and NVRAM.
    Boot drive's directory has been corrupted - Repair with Disk Utility.
    Critical system files are damaged or deleted - Reinstall OS X.
    The disk drive is physically non-functional - Replace the hard drive.
    Repair the Hard Drive and Permissions
    Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
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    The main difference if you are using Lion or Mountain Lion is that you must first boot from the Recovery HD:
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    Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
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    Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
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    2. Reinstall Snow Leopard
    If the drive is OK then quit DU and return to the installer.  Proceed with reinstalling OS X.  Note that the Snow Leopard installer will not erase your drive or disturb your files.  After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
    Download and install Mac OS X 10.6.8 Update Combo v1.1.
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    Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
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    Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
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  • HT4623 Hi, I'm unable to install updates on my iPad. I tried several times and i received a message saying I'm not connected to the internet. I have a wifi at home. I also tried through my MacBook Pro with no success.

    I'm unable to install updates my iPad.

    What model iPad and what version of iOS is it currently running?
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    http://support.apple.com/kb/HT4972
    How to install iOS 6
    http://www.macworld.com/article/2010061/hands-on-with-ios-6-installation.html
    iOS: How to update your iPhone, iPad, or iPod touch
    http://support.apple.com/kb/HT4623
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    Some things to try first:
    1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
    2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
    3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
    4. Go into your router security settings and change from WEP to WPA with AES.
    5.  Renew IP Address: (especially if you are droping internet connection)
        •    Launch Settings app
        •    Tap on Wi-Fi
        •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
        •    In the window that opens, tap on the Renew Lease button
    ~~~~~~~~~~~~~~~~~~~~~~~~~
    iOS 6 Wifi Problems/Fixes
    How To: Workaround iPad Wi-Fi Issues
    http://www.theipadfan.com/workaround-ipad-wifi-issues/
    Another Fix For iOS 6 WiFi Problems
    http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
    Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
    Fix For iOS 6 WiFi Problems?
    http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
    Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
    http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
    How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
    http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
    iOS 6 iPad 3 wi-fi "connection fix" for netgear router
    http://www.youtube.com/watch?v=XsWS4ha-dn0
    Apple's iOS 6 Wi-Fi problems
    http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
    ~~~~~~~~~~~~~~~~~~~~~~~
    How to Fix a Poor Wi-Fi Signal on Your iPad
    http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
    iOS Troubleshooting Wi-Fi networks and connections  http://support.apple.com/kb/TS1398
    iPad: Issues connecting to Wi-Fi networks  http://support.apple.com/kb/ts3304
    WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
    How to Fix: My iPad Won't Connect to WiFi
    http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
    iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
    iOS: Recommended settings for Wi-Fi routers and access points  http://support.apple.com/kb/HT4199
    How to Quickly Fix iPad 3 Wi-Fi Reception Problems
    http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
    iPad Wi-Fi Problems: Comprehensive List of Fixes
    http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
    Connect iPad to Wi-Fi (with troubleshooting info)
    http://thehowto.wikidot.com/wifi-connect-ipad
    Fix iPad Wifi Connection and Signal Issues  http://www.youtube.com/watch?v=uwWtIG5jUxE
    Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
    How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
    Unable to Connect After iOS Update - saw this solution on another post.
    https://discussions.apple.com/thread/4010130
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    ~~~~~~~~~~~~~~~
    If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
     Cheers, Tom

  • HT4623 trying to update to 6.1.3 but keep getting message not connected to the internet when it is

    I am trying to update my ipad to 6.1.3 and even though it is connected to the internet, i keep getting the message: unable to update not connected to the interent.
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    Try using this extension to force compatibility.
    * https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/
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  • My MacBook Pro Won't Start and I've tried all of the suggestions I can find to no avail. What should I try?

    When I boot the computer I get the flashing question mark. I have tried:
    1.) Holding 'C' to access the 'Startup Utility' but the only thing that accesses is the Wireless Internet access.
    2.) Holding [cntrl. option, power button] but that didn't access anything
    3.) Holding [shift] to access safe mode, but that didn't access anything
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    That seemed to solve the issues until this morning when a video I was playing suddenly froze. I restarted the computer and the flashing question mark appeared.
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    Just the Option key.
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    And hopefully you removed all vestiges of MacKeeper.

  • Macbook Pro won't start and I have to pay $100 to get it checked?

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    "They asked me for $100 just to open it! Is that normal and *should I get a replacement for free?"*
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    !http://i50.tinypic.com/izvwo1.gif!

  • Enabled Apache and now my MacBook Pro won't start at all

    Subject pretty much says it all. I was enabling Apache, php and installing ioncube. Restarted the computer, because I wanted to make sure Apache really was restarting... and now the computer will not come on at all.
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    Does it start up in Target Disk Mode? Try holding T while booting up.

  • I was installing mountain lion and now my macbook pro won't start up

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  • Recently replaced the harddrive in my macbook pro after months of inactivity, now my macbook pro won't start

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    I appreciate your help, but please don't just put me down like that
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