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MacBook Freeze with lines on screen

I have a 2.1 CTO with 120 GB HD, 1 GB RAM and 256 video RAM. I have experienced three computer freezes with an associated screen display that has diagonal lines as shown in this image:

<http://homepage.mac.com/strait/Sites/Macbook/pages/MacBook%20Freeze%20Screen.h tm>

The lines have active pixels that turn on and off during the freeze, making the lines appear to be slightly animated, or "sparkly." The computer must be restarted with the power button after the freeze.

The freeze has happened once a day and is not associated with any specific activity. The first time it happened was right after receiving the unit before I added any software. No programs were open.

The second time occurred while using Front Row and viewing a DVD, and after adding software (MS Office and Adobe CS programs).

After this, I ran the Hardware Test (short and extended) and there were no problems discovered. I then Erased and zeroed the disk and reinstalled the OS and all the Apple software, plus my software. I then added an additional 1GB of Crucial RAM.

The third time occurred with no programs open. I reran the hardware test and again had no problems. I then removed the extra RAM, but the first two incidents occurred with only Apple installed memory.

I have had the computer for three days and have had three freezes.

Any thoughts on this?

Dave

G5 2.5 GHz Quad, 6.5 GB RAM, NVIDA 7800 GT Mac OS X (10.4.5) MacBook Pro 2.1 GHz

Posted on Feb 25, 2006 5:55 PM

Reply
29 replies

Apr 1, 2006 1:43 PM in response to www.dbPIX.com

OK.....Like.....it has not done it since my last
post, over a week ago. I have done everything I can
possibly think of to induce it and it works fine
now....what's that all about? LOL!


It could have been a software problem. It would be unusual but not impossible to have a hard crash corrupt the screen. In general, modern operating systems prevent this kind of crash but who knows. Also, believe it or not, you can get a crash from cosmic rays. There is a finite chance that a high energy particle hits your CPU/GPU/RAM/Video RAM and causes a crash. This is relatively rare but not impossible. If it doesn't come back, there isn't much to worry about, it was "just one of those things."

Apr 27, 2006 10:48 PM in response to David Strait

Thanks for these posts. After only a couple of weeks of owning this same computer, in the midst of editing pics in Photoshop, my screen permanently did what you've all displayed here. The pictures were very helpful in confirming it was the same disease, but, in my case, the disease was swift and fatal -- no amount of rebooting, removing the battery, or waking from sleep could wake my computer from his nightmare. I think you must be correct that it was the video card, since at some point in every reboot there is a fully lighted blue screen for a few seconds, proving that the display is still capable.

I took the computer to my local Applestore where they took one look and offered me a replacement computer, then transferred all data and programs from dead computer to brand new live one and handed it over to me.

If Dave is happy, I'm ecstatic! Yesssss! Thanks to the good people at the Applestore! I'm even happier because I live in So Cal and don't need a laptop to keep me warm! Thanks for posting this, though, Dave. It was great to know all of my data would still be there.

Louisa

MacBook Pro Mac OS X (10.4.5)

Jul 6, 2007 11:01 AM in response to purposemc

Well, here we are almost a year to the day and i'm just now experiencing this problem. Thanks for the detailed follow-ups everyone. Very helpful for someone new to this issue..

I have a 15in MBP (2GHz Intel Core Duo, 120GB) and, save for a free battery replacement, have had zero problems until now. Like the others here, i woke up one morning to the pattern described in the first post. A hard shutdown and reboot did not cure the problem but later in the day everything worked fine. Then the same issue the next day: diagonal lines and freezing followed by periods of working fine. I'm now at about 48hrs after the first time it happened and this is what i get when i boot...

http://www.flickr.com/photos/thejosephboys/740255978/

...note too that the machine is all but frozen upon booting. I can move the cursor around but it can't open anything. (Cursor appears as a white rectangle near the center of that image.) Lastly, when i tried booting the thing as a HD the other Mac i connected it to did not recognize the contents of the (MBP) drive. (Warning message: "You Have inserted a disk containing no volumes that Mac OS X can read.") So i'm unable to back up any of my data myself.

But i just recieved a call from a co-worker with some good news. He asked someone in his dept (someone that used to work at an Apple Store) that said the thing to do is to have the Apple Store folks remove the HD and back it up right then and there - BYO HD, obviously - before sending the comp off to Atlanta or Houston or wherever. Typically, according to this source anyway, replacing the logic board doesn't necessarily have to involve the HD. So there's a chance that my/your data will be okay, but backing everything up before sending the machine off for repair is obviosuly the way to go here...

I'll write more later with updates/progress/etc. Thanks to all of you for sharing your experiences and giving me some guidance as i deal with this issue myself..

Brandon


MacBook Pro Mac OS X (10.4.9) 15in, 2GHz Intel Core Duo

MacBook Pro Mac OS X (10.4.9) 15in, 2GHz Intel Core Duo

MacBook Pro Mac OS X (10.4.9) 15in, 2GHz Intel Core Duo

MacBook Freeze with lines on screen

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