Screen Flickering only when trying to play games on an early 09 iMac 24inch

Discussion in 'iMac' started by Stfury, Sep 27, 2014.

  1. Stfury macrumors newbie

    Sep 27, 2014
    Processor : 2.93 GHz Intel Core 2 Duo
    Memory : 8 GB 1067 MHz DDR3
    Graphics : NVIDIA GeForce GT 120 256MB
    Software : OS X 10.9.5

    I keep running into a problem whenever i start a game it will go fine for about 30-60 seconds and it will start to flicker on the bottom half of the screen only. if i don't close the game and let it continue to flicker my iMac will freeze and crash, but when i power it back up it makes the internal sounds as if its turning on and makes the annoying power up sound but the screen stays black.

    The games i am trying to run are Dota 2, CSGO, D3 RoS. it works perfect for hearthstone, but anything else just crashes
    Thank you for any help in advance:)
  2. Stfury thread starter macrumors newbie

    Sep 27, 2014
    It also started doing this after i updated to OS X Maverick

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