My MBP keeps freezing with red and black vertical lines. What's going on?

About once a week my early 2011 i7 macbook pro seems to freeze with these weird lines on screen. I was using Adobe Photoshop CS6 and had quicktime playing an mp3 in the background. Nothing out of the ordinary happened that I know of that could have triggered the computer locking up.
I took my MBP to the Apple store and they said it passed all diagnostic tests. They suggested that since it is sporatically happening, it may be weeks before an answer is given to the problem that I am experiencing. Here are some pictures I took when my mac last froze.

Were you ever able to resolve this? My friend's early 2011 MacBook Pro with your same specs except with 10.6.8 just did the same thing while Google Earth 7.1.2.2019 was running. Never any other issues, just happened out of the blue.

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My Nokia 5530 keeps getting a red and black stripe...

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Ogelthrorpe.
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Unfortunately, no apple store where I now reside!!!!
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Take a picture if the problem just in case the aberration does not show in the presence of the technicians.
Ciao.

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http://www.flickr.com/photos/47548003@N03/4357722284/
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Welcome to Apple Discussions.
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Roger

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Hi PPRI and Miriam,
Same deal going on here. It's been a while since I last posted - meaning no problems (which is goooood). So here is the issue:
Would stop at blue screen before loading to main screen. Minor repair on HD volume, and now freezes on main screen very quickly, after booting past blue screen. A few wierd pixels are seen, which lets me know that it has frozen.
Here's what I did:
Hardware check with utility - no problems found, including logic board. From the manual, it seems like it is a software issue.
As before, I repaired a few permissions and minor repair on HD volume. Still not working.
Also opened up my vents and carefully vacuumed the dust - fans were spinning hard. Still, not working.
My next step is to do an archive & install. I'm not sure how to backup my files, so this will have to suffice. This leads me to my questions:
Q1 - How do you burn a backup, without an external HD and without being able to get past my main screen?
Q2 - I noticed a post before this one, concerning the same issue, with Miriam posting on it. Is it overkill to post the same problem/question in another thread in order to maximize the chances for a good response? Any suggestions Miriam?
Thank you for being so helpful. Apple community rocks!
(PS - will let you know how the archive/install goes. If it doesn't work, I may pay to back my files on disc, and then I'll try reformatting HD altogether. Again, will let you know how it goes).
(PS2 - Not sure if this matters, but my imac was one the ones that needed the free extended warranty for the capacitor issues - identified by the serial numbers. Doubt that's the problem since it was working fine after repairs).

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With Windows Explorer, navigate to your C:\Program Files\Common Files\Apple\Apple Application Support folder.
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My MBP keeps freezing with red and black vertical lines. What's going on?

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