Flashing Screen, fonts changed,..iMac unusable

Discussion in 'iMac' started by SweeneyD24, Oct 19, 2016.

  1. SweeneyD24 macrumors regular

    SweeneyD24

    Joined:
    Feb 16, 2011
    Location:
    Mauritius
    #1
    I powered on my 21" iMac at work and noticed it was taking a rather long time to boot. When it finally got to the login screen, i noticed the fonts have changed. I logged in and a few minutes later finder crashed, i got an error message (Finder crashed) and the screen started to blink

    There's basically nothing i can do. No menu bar, no docks just the cursor, the error message and the flickering screen.

    I'll try a restore (if possible) as last resort but i was just wondering if anyone has come across such an issue and how they fixed it.

    Thanks.
     
  2. Samuelsan2001 macrumors 603

    Joined:
    Oct 24, 2013
    #2
    If you are lucky it's the hard drive but that's sounding like a logic board failure possibly due to the graphics card. If you have a bootable back up try booting from that, if it works it's the hard drive if not it's probably the board.
     
  3. havokalien macrumors 6502a

    havokalien

    Joined:
    Apr 27, 2006
    Location:
    Kelso, Wa
  4. SweeneyD24 thread starter macrumors regular

    SweeneyD24

    Joined:
    Feb 16, 2011
    Location:
    Mauritius
    #4
    iMac 21.5" Late 2012
     
  5. Kcof macrumors newbie

    Kcof

    Joined:
    Oct 26, 2016
    #5
    Same issue for about 3 years.

    My research indicates bad soldering in graphics card, can't find alternative.
     
  6. havokalien macrumors 6502a

    havokalien

    Joined:
    Apr 27, 2006
    Location:
    Kelso, Wa
    #6
    2012 i dont think the gpu in it is removable to below like the 2008 - 2011 iMacs. might check ifixit.
     

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