1 Reply Latest reply: Apr 14, 2013 10:42 AM by BDAqua
stephenfromclondalkin Level 1 Level 1 (0 points)

I just got my IMac 21.5 turned it on it was fine untill it told me it had to restard to install new software. When it restarted i got vertical lines then a black screen. How can i fix this?


iMac
  • BDAqua Level 10 Level 10 (119,870 points)

    Hi, what OSX version is it?

     

    See if these work or not...

     

    "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.)

    *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. Select your Mac OS X volume.

    5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."

     

    http://docs.info.apple.com/article.html?artnum=106214

     

    Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.

     

    (Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)

     

    If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.

     

     

    If 10.7.0 or later...

     

    Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.