Hi to all,
I'm new to this forum, so I'm hoping someone can help me.
Last week I updated my Macbook Pro to El Capitan and I wish I hadn't.
I have a MacBook Pro, 15 inch , early 2011.
- 2GHz Intel Core i7
- 4 GB 1333 MHz DDR3
- Intel HD-video 3000 384 MB
Since I updated my MacBook to El Capitan, I noticed a problem:
On completely random moments, the display becomes filled with lines or turns blue, black or light brown.
When the screen turns blue/black/brown it freezes after a while and the Macbook automatically reboots.
It also sometimes happens that the right side of the screen moves a little into the left side: when I move my cursor to the end of the right side, it enters the left side of the screen. This also results in a blue screen and an automatic reboot.
I added some pictures and a movie to show what it looks like. Here's also a video:
I'm not very technically skilled, so I had no idea what was wrong.
I started googling and already tried the following things:
- Erasing my hard drive in recovery mode and reinstalling El Capitan, this did not fix the problem.
- Erasing the hard drive again and downgrading to Yosemite from an external SD disk. I managed to downgrade to Yosemite, but this also did not fix the problem.
- I ran a detailed Apple Hardware Test, but the test found no error.
- I reset my NVRAM and SCM, this also did not fix the problem.
- I scanned for viruses and found nothing harmful.
I haven't got the slightest idea what the problem is and how I can fix this, so I'm hoping some of you can tell me what I can try to fix this error. Thanks in advance.

I'm new to this forum, so I'm hoping someone can help me.
Last week I updated my Macbook Pro to El Capitan and I wish I hadn't.
I have a MacBook Pro, 15 inch , early 2011.
- 2GHz Intel Core i7
- 4 GB 1333 MHz DDR3
- Intel HD-video 3000 384 MB
Since I updated my MacBook to El Capitan, I noticed a problem:
On completely random moments, the display becomes filled with lines or turns blue, black or light brown.
When the screen turns blue/black/brown it freezes after a while and the Macbook automatically reboots.
It also sometimes happens that the right side of the screen moves a little into the left side: when I move my cursor to the end of the right side, it enters the left side of the screen. This also results in a blue screen and an automatic reboot.
I added some pictures and a movie to show what it looks like. Here's also a video:
I'm not very technically skilled, so I had no idea what was wrong.
I started googling and already tried the following things:
- Erasing my hard drive in recovery mode and reinstalling El Capitan, this did not fix the problem.
- Erasing the hard drive again and downgrading to Yosemite from an external SD disk. I managed to downgrade to Yosemite, but this also did not fix the problem.
- I ran a detailed Apple Hardware Test, but the test found no error.
- I reset my NVRAM and SCM, this also did not fix the problem.
- I scanned for viruses and found nothing harmful.
I haven't got the slightest idea what the problem is and how I can fix this, so I'm hoping some of you can tell me what I can try to fix this error. Thanks in advance.


