My mac displays weird blue bars!!

Discussion in 'macOS' started by zantaff, Mar 5, 2013.

  1. zantaff, Mar 5, 2013
    Last edited: Mar 5, 2013

    zantaff macrumors newbie

    Apr 28, 2011
    All of a sudden, my mac started displaying light blue bars in white regions. I have no idea what may have caused this. I don't think the display just broke, because when you run the something, like the mouse or a window over the blue bars, it displays correctly in the window's "shadow".

    Look at the pictures to see what I'm talking about.
    I couldn't use screenshots, because when viewed on another computer, the image looks fine.
    That's why the images are taken with a camera.
    Picture 1
    Picture 2
    Picture 3
    Picture 4

    Any help would be great!

    Macbook Pro
    OS X 10.6.8
  2. ppcg4mac macrumors 6502


    Feb 13, 2012
    Northwest Kansas
    my guess is the video card, but i could be wrong
  3. zantaff thread starter macrumors newbie

    Apr 28, 2011
    I also tried resetting the PRAM and SMC, but to no avail.
  4. Quad5Ny macrumors 6502a


    Sep 13, 2009
    New York, USA
    What are the display settings in System Preferences? Did you turn the contrast up using the keyboard shortcuts?

    If you boot off of the OS X recovery DVD that came with your Mac, do whites look like that as well?
  5. madsci954 macrumors 68030

    Oct 14, 2011
    That would be be my first guess as well.
  6. theferret macrumors newbie

    Mar 29, 2011
    Can you connect your macbook pro to an external monitor? What happens then?

    That can help diagnose what the problem is - video card, screen etc.
  7. zantaff thread starter macrumors newbie

    Apr 28, 2011
    Nothing came up in the Diagnostics....

    I started messing with the LCD color calibration, and I set the target white point to just a little higher than native. This took all the blue away, so I think I'll stick with that for now.
    After this, I connected to an external monitor, and it seemed to work fine.

  8. gregorsamsa macrumors 6502a

    Apr 6, 2006
    (Metamorphosing near) Staffs, 51st State.
    I had this problem with a 2008 iMac. It started after about 2 & 1/2 years of problem-free ownership. Initially it was an on-&-off thing. Whenever the iMac got too warm, those exact same blue lines would appear. Diagnostics also told me nothing.

    Most regrettably, for me the problem never went away & eventually my iMac stopped working (after 2yrs 10 months). If you haven't already done so, back up all of your work immediately.

    I had no Apple Care, so I ended up selling my iMac to a Mac engineer on eBay & bought a new 2011 Mini.

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