Apple has determined that some AMD Radeon HD 6970M video cards used in 27-inch iMac computers with 3.1GHz quad-core Intel Core i5 or 3.4GHz quad-core Intel Core i7 processors may fail, causing the computer’s display to appear distorted, white or blue with vertical lines, or to turn black. iMac computers with affected video cards were sold between May 2011 and October 2012.Source: 9 to 5 Mac
Apple says that the issue is connected solely to 27-inch models with 3.1GHz quad-core Intel Core i5 or 3.4GHz quad-core Intel Core i7 processors. AppleCare, Genius Bars, and Apple Authorized Resellers have been given a series of steps to verify if a customer’s iMac exhibits the graphics card issues.
Apple recalls mid-2011 iMacs due to faulty GPUs
Posted on Monday, Aug 19 2013 @ 11:18 CEST by Thomas De Maesschalck