Trying to start my IMac click on my admin icon and enter the correct password but then flashes to white screen and back to sign in, my desktop wont come on ... help!!!!

Trying to start my IMac click on my admin icon and enter the correct password but then flashes to white screen and back to sign in, my desktop wont come on ... help!!!!

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.
When the menubar appears select Terminal from the Utilities menu. Enter resetpassword at the prompt and press RETURN. Follow instructions in the dialog window that will appear.
Or see Reset a Mac OS X 10.7 Lion Password and OS X Lion- Apple ID can be used to reset your user account password.

Similar Messages

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    Paste these two links into your browser and have a read -
    http://support.apple.com/kb/HT1212
    http://www.everymac.com/systems/apple/ipad/ipad-troubleshooting-repair-faq/ipad- how-to-unlock-open-forgot-code-passcode-password-login.html

  • TS1367 Hallo,I have an IMAC 21.5. which does not start.When i press the power button i hear only beep with an interval of 4-5 seconds.Some times when i take off the RAMS and put them again then get a white screen and shows that i have to insert a bootable

    Hallo ,I have an IMAC 21.5. which does not start.When i press the power button i hear only beep with an interval of 4-5 seconds.Some times when i take off the RAMS and put them again then get a white screen and shows that i have to insert a bootable device.Then i bought OSX mountainlion on line and wrote it on a DVD and tried with a USB key board to start the DVD.But does not work.Please help me to get this imac work.
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    Hey terremo,
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    Thanks,
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    https://discussions.apple.com/thread/5210788?tstart=0
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    plaese help me to activate my facetime.

    Hello Kmart212,
    If you are having issues with FaceTime and iMessage, then check out the articles below for more information on how to troubleshoot your issue further. I would also make sure that your new Apple ID is verified and not causing any conflicts. 
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    http://support.apple.com/kb/ts3367
    iOS: Troubleshooting Messages
    http://support.apple.com/kb/ts2755
    iOS: Troubleshooting FaceTime and iMessage activation
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    Follow us on Twitter @VZWSupport

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    Hi,
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    http://support.apple.com/kb/PH6606
    Under some circumstances, you may need to reinstall Mac OS X. You can reinstall Mac OS X while keeping your files and user settings intact.
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    If you need to reinstall Mac OS X and you’ve been using Time Machine to back up your applications, files, and user settings, you can easily restore this information from your Time Machine backup disk after you’ve reinstalled Mac OS X.
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    Intel-based iMac - Contact Support - Apple Support
    http://www.apple.com/support/imac/intel/contact/
    Good luck!
    - Judy

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    I see that you ave changed some network.http prefs.<br />
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    network.http.max-persistent-connections-per-server 8<br />
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    network.http.pipelining.firstrequest true<br />
    network.http.pipelining.maxrequests 8<br />
    network.http.proxy.pipelining true<br />
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    See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]

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