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graphics lags

  1. angniempol

    iMac 2012 - black-and-white stripes, graphics lags, artifacts...

    Dear Apple Users, I bought a used iMac, late 2012, NVIDIA GeForce GT 640M, I5-3335S ?, 8 GB RAM, 1600 MHZ, PC3-12800, 1TB HDD. Everything was fine for two weeks until I turned the machine off for a night and when I came back to my office in the morning and started it, this happened...
    • angniempol
    • Thread
    • 2012 artifacts graphic error graphic lags graphics lags imac
    • Replies: 12
    • Forum: iMac
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