Monitor image breaking up - crashing monitor

Discussion in 'Mac Pro' started by jwhitt, Oct 12, 2012.

  1. jwhitt macrumors newbie

    Oct 12, 2012
    Whenever I use a web browser it works fine for a while then the image breaks up on my monitor and I must restart the Mac to fix it. I suspect Flash may be the problem.
    I had this problem before and updated the video card drivers and Flash plug in software and that fixed the problem. Then recently I installed a new SSD drive from OWC and cloned my start up drive to the SSD which I now use as my start up drive. Now the problem is back.

    I have a 2009 Mac Pro 2.66 (MacPro4,1), 10.6.8 system. Two NVIDIA GeForce GT 120 video cards, one HP LP3065 30" Monitor and one HP 2335 24" monitor

    Model Name: Mac Pro
    Model Identifier: MacPro4,1
    Processor Name: Quad-Core Intel Xeon
    Processor Speed: 2.66 GHz
    Number Of Processors: 1
    Total Number Of Cores: 4
    L2 Cache (per core): 256 KB
    L3 Cache: 8 MB
    Memory: 7 GB
    Processor Interconnect Speed: 4.8 GT/s
    Boot ROM Version: MP41.0081.B07
    SMC Version (system): 1.39f5
    SMC Version (processor tray): 1.39f5
    Serial Number (system): H09313TX4PC
    Serial Number (processor tray): J5927032Y4MFE
    Hardware UUID: D48A0256-E177-54DB-AAFD-8C151BB490CF

    Any suggestions? I could go back to using my old start up hard drive, but it is so much slower than the SSD drive.
  2. goMac macrumors 604

    Apr 15, 2004
    What's your graphics card? Sounds like your graphics card may be dying.

    Edit: Hm, just noticed the two GeForce GT120s. Is it just one display or both?
  3. Draeconis macrumors 6502a

    May 6, 2008
    Might be an idea to remove your serial numbers and UUID from your post.

    Sounds like a dying gfx card.

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