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Apple's mid-2011 iMacs.

Apple has reportedly begun a new program to replace faulty graphics cards found in some mid-2011 to late-2012 iMacs.

The new replacement program, which was reported by 9to5Mac, affects systems with AMD Radeon HD 6970M video cards. Those were found in the 27-inch iMac models with either the 3.1 or 3.4GHz quad-core Intel i-series chips.

According to support language, the video cards could fail "causing the computer display to appear distorted, white or blue with vertical lines, or to turn black." Apple has listed 13 different possible serial number suffixes that are a part of that group, which are eligible for the replacement.

That iteration of iMac was sold between May 2011 to October 2012.

Apple did not immediately respond to a request for comment on the program, which is not posted to its support site, though was reportedly sent to Apple Support employees on Friday.