Late 2009 iMac white screen after HD replaced

Discussion in 'iMac' started by zen0dotus, Mar 5, 2014.

  1. zen0dotus macrumors newbie

    Mar 5, 2014
    Hey everyone,

    So I have a late 2009 C2D 27" iMac (A1312 EMC 2309)

    I just replaced the hard drive. I reassembled it, it powers up, I get the startup chord, and the screen goes full white.

    I checked and found that the mobo end of the Vertical Sync cable had gotten munged, so I replaced that, but I have the same symptoms.

    Has anyone else had this problem? Does anyone know a solution?

    Is there a chance that it's the LVDS cable?

    I'd love a knowledgable response before I drop more money on a part, so I don't buy the wrong one!

    Thanks very much in advance,

  2. old-wiz macrumors G3

    Mar 26, 2008
    West Suburban Boston Ma
    what about installing the os? YOu did that, right?
  3. zen0dotus thread starter macrumors newbie

    Mar 5, 2014
    No, I haven't been able to install the OS. There is no video on the screen. It's just white.

    I try holding down the C key with the Snow Leopard disk in the drive, but there is not change, the screen is just all lit up white.
  4. yjchua95 macrumors 604

    Apr 23, 2011
    GVA, KUL, MEL (current), ZQN
    With the SL disc in the SuperDrive, power on your Mac while holding down the Option key, then select the SL disc to boot from.
  5. photosmike macrumors member

    Mar 10, 2010
    When I had this problem, I found that I had not seated the "display data cable" (the wide one) properly. Re-connecting it solved the problem.

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