Jan 17, 2019 I have a 2011 Imac 27', graphics card appears dead, first was just white screen, and now no screen on bootup, but I can hear it booting up, hard drive making usual boot up sounds and fans etc. Problem is I want to sell it but I can't get hard drive wiped. 2GB Graphics Video Card for Apple iMac 2011 A1312 MC814LL/A MC814 27-Inch All-in-One Desktop PC AMD ATI Mobility Radeon HD 6970M HD6970M HD6970 GDDR5 MXM VGA Board Replacement.
Tuesday, August 20th, 2013 Author: Do you have a or with the AMD Radeon HD 6970M video card? Have you been seeing white or blue vertical lines in the display? Has your screen randomly gone dark? Does the picture seem generally distorted? If so, your video card may be the culprit and Apple has acknowledged that the AMD card used for those models has been problematic.
Luckily, Apple is offering a for machines that are afflicted. First your 27″ iMac needs to be evaluated to verify that the video card has indeed failed (as opposed to LCD panel issues, EMF distortion, or the like). You can setup an appointment at your local, or contact for additional options. If the evaluation finds that the card failed, Apple will replace the card free of charge for up to three years after the initial sale. Recent Posts. Macs last a long time. Don't plunk down your hard earned money on a new Mac when an upgraded Mac can run faster than a new Mac.
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