Apple has announced a repair extension program for several models of MacBook Pro made from 2011-Early 2013.
Details at http://www.apple.com/support/macbookpro-videoissues/ - if you have an affected Mac that fails due to video problems, Apple will cover the repair even if the Mac is out of Warranty.
Affected Models:
- MacBook Pro (15-inch Early 2011)
- MacBook Pro (15-inch, Late 2011)
- MacBook Pro (Retina, 15-inch, Mid 2012)
- MacBook Pro (17-inch Early 2011)
- MacBook Pro (17-inch Late 2011)
- MacBook Pro (Retina, 15 inch, Early 2013)
