Random horizontal lines and crashes after upgrade

Discussion in 'macOS' started by oneofthesedaves, Jul 19, 2011.

  1. oneofthesedaves macrumors regular

    Joined:
    Jun 6, 2011
    Location:
    Tennessee
    #1
    I just upgraded a Core Duo iMac to Snow Leopard. It worked great until the moment when I installed Snow Leopard. Now I have random horizontal lines, crashes, and hangs. At the Apple store they hooked it up and did diagnostics. All the hardware is operating properly according to Apple. I have reset PRAM, reinstalled the OS 3 times, erased the hard drive and did a clean install, repaired disk permissions, repaired hd. It will work pretty well in safe mode, so that tells me it is a hardware issue. Any suggestions? I'm losing my mind. And no, it is not covered under Apple Care. And no, I don't have a copy of Leopard.
     
  2. oneofthesedaves thread starter macrumors regular

    Joined:
    Jun 6, 2011
    Location:
    Tennessee
    #2
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_4 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8K2 Safari/6533.18.5)

    Sorry, I meant to say that since it works in safe mode it is likely a software issue
     

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