If it runs fine in Safe Mode but not with a regular boot, you have a software issue. You can get viruses off the internet or via email attachment. They have gotten very sneaky. Look in your downloads folder and question ANYTHING. Most Macs I get in nowadays are infected. Or have things like Genio or MacKeeper.
To verify, reformat the drive, use the "Write Zeros" option to map out any bad blocks. Reinstall the system via a flash drive, external back up drive with a system or via an internet install and see if you problem is gone.
UPDATE 1/20/16
https://www.apple.com/support/macbookpro...
Take it to an ASP and have the logic board tested for this recall.
MacBook Pro Repair Extension Program for Video Issues
Apple has determined that a small percentage of MacBook Pro systems may exhibit distorted video, no video, or unexpected system restarts. These MacBook Pro systems were sold between February 2011 and December 2013.
Apple or an Apple Authorized Service Provider will repair affected MacBook Pro systems, free of charge. See below for details on affected models and service options.
Symptoms
An affected MacBook Pro may display one or more of the following symptoms:
Distorted or scrambled video on the computer screen
No video on the computer screen (or external display) even though the computer is on
Computer restarts unexpectedly
Products affected
15-inch and 17-inch MacBook Pro models manufactured in 2011
15-inch MacBook Pro with Retina models manufactured from Mid 2012 to Early 2013
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7条评论
Can you describe what is working and what is not when the system is frozen. Does the display its self react oddly? Does the mouse point still track across the screen? What application were you using at the time and is it a different application also encounter the problem.
由 Dan 完成的
Thanks for you reply. The system freezes after a couple of time and nothing is working. I can't use the mouse point anymore. It's nothing more than a frozen screen.Then after a minute of freeze the Macbook Pro has a black screen and I can boot it again. I think it has nothing to do with applications. If you want to I can take some pictures of it.
由 Alex 完成的
What kind of applications are you running when this happens Games, watching vids, surfing the web ... ? Does it happen when the system is doing nothing? FYI: I'm thinking hardware issue but need some more to isolate what to focus on.
由 Dan 完成的
The system crashes when it's doing nothing but it crashes when I'm surfing the web for example, too. Even when I'm trying something out in the terminal it's crashing. There is no special point or application which let the system crash. It's happening randomly, mostly between 2-15 minutes after boot up.
由 Alex 完成的
What has your Virus Protection software reported?
由 mayer 完成的
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