So open the commandline terminal program (search for “terminal” using spotlight). There are multiple ways to do it, I would recommend via the terminal. If that doesn’t help, try deleting the preference files as in the post. * Shutdown and the start your Mac, and before the grey boot screen appears hold down the P, R, option and command keys simultaneously. If that doesn’t help then try the steps as in the post.

I would first try to reset the PRAM to see if that helps. Replace or Fix All 2011 Macbook Pro with Graphics Failure This petition had 39,940 supporters Raj Dsouza started this petition to Timothy D. : fixed typo in preference plist filename.

You may have to reset your display preferences (resolution) once you login.Startup, immediately press and hold the P and R keys while holding down the option (⌥) and command (⌘) keys before the gray boot screen appears, which resets the PRAM.Delete ~/Library/Preferences/ByHost/*.plist.The basic idea: delete some preferences files and reset the PRAM: Scouring forums for answers led me here, which worked for me!. Since the onset was sudden I immediately though: imminent hardware failure! But thankfully that turned out not to be the case. Forcing the graphics card to the discrete NVIDIA GT 650 instead of integrated Intel GPU sped things up, but the overall experience still didn’t feel right. This weekend my Mac suddenly started behaving strangely: moving windows around occurred with a nearly psychodelic delay, mission control (aka exposé) was “jerky”, and scrolling was not fun.

Macbook pro gpu failure fix