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Screen froze, purple lines, three beeps. Help!

I was using my computer to watch a movie, when suddenly it froze and purple lines appeared on the screen. The purple lines seemed to glitch, and the sound of the movie sounded like a broken record. In a panic, I held the power button to turn it off. The screen went black, but the fan was still going, and the computer was emitting three beeps. I held the power button again, and it finally completely shut down. I did some research, and it says the three beeps are a problem with the memory, but what about the lines? What does that mean?

Perform SMC and PRAM resets:

https://support.apple.com/kb/ht3964

https://support.apple.com/kb/PH14222?viewlocale=en_US

Perform a Safe Boot:

https://support.apple.com/kb/HT1564?viewlocale=en_US

What are the results?  Any beeps or display aberrations?

Ciao.

I should've specified - the computer turned back on normally. It only seems to happen when I leave it on sleep for too long (a day or two) and then use it for prolonged periods of time (usually around 2 hours). I'm worried that this problem will worsen and eventually I'll lose everything.

Run an Apple Hardware Test and see if that produces any clue:

https://support.apple.com/kb/ht1509

Note that an error free AHT is not conclusive.

Ciao.

I'm running an AHT right now. I'll update when it's done. Thank you!

AHT said there's no trouble, but obviously it isn't normal for the computer to suddenly stop working. I'm unsure of what to do next. Any suggestions?

Make an appointment at an Apple store genius bar.  The technicians have superior diagnostic tools at their disposal and are in a much better position to determine what are the problems your MBP is experiencing.

Ciao.

Picture Included. Mid 2012 13 inch Macbook Pro green/purple lines on screen. Freezes. Sometimes 3 beeps.

Is this the same problem you were experiencing?

I'm having this issue as well... Any luck?

****LONG TERM SOLUTION*****.

Hi everyone. I also am having these exact problems. Just for everyone's benefit, here are links to all other threads I can find with people who are also experiencing the same problems. It seems to me this is a fault that is present in many Mid 2012 macbook pros.

Macbook Pro screen glitches, 3 beeps, NOT THE RAM

Field of vertical lines all over Macbook Pro screen? (+ freezes, beeps)

Macbook Pro purple lines on screen?

Macbook Pro display glitches and laptop freezes

Re: Screen froze, purple lines, three beeps. Help!

I have a Mid 2012 MacBook pro and experience all of the same issues as described on all of these threads.

• laptop will randomly freeze
• glitches then appear on the screen, mouse stops moving, keyboard is unresponsive
• the laptop then shuts down and won't turn on again
• it then starts beeping 3 times while the screen remains black. I have to hold down the power button to stop the beeping
• sometimes, after the screen freezing and glitching, it will restart
• some days it will only happen once, other days it will literally happen 6 or 7 times
• can happen while watching videos, just browsing on safari or it can happen while still on my home screen. It is completely random.
• I have run system diagnostics, i have wiped the laptop and reinstalled the Operating system,  I have brought it to an apple technician who didn't know what is wrong with it. I have wasted hours on the phone to apple support who have just said its out of warranty and they can't cover the costs even though I have told them that this seems to be a manufacturers fault.

The bottom line is, I bought this MB just over two years and spent a lot of money on it, I have taken perfect care of it, never dropped it or spilled anything on it and it is always kept in a protective bag. It therefore is completely unacceptable that I should be experiencing these issues with one of the most highly regarded brands around. It's not good enough and we should not have to incur costs to repair these faulty laptops.

***SO, THE LONG TERM SOLUTION***

I went to the genius bar today and had a chat with a very helpful individual who told me that apple will not recall or release a 'repro' on a line of products based on what people say on forums. Apple will only cover the costs and accept fault if they see that there is enough people experiencing the same issues on the same line of products. She said that we need to go to https://www.apple.com/feedback/ and fill out tis feedback form. If enough peole do it, Apple will see that this indeed is a fault with 2012 MacBooks!

This means they will cover the cost of people who are experiencing these problems!

I know it's not an immediate solution, but it seems to be the only way Apple will realise and hopefully the, accept the fault.

I Got the same identical problem, now my computer is in the Apple Store, trying to understand what happened,

maybe be for them is the logic board that is dying, and I ve to pay more than 500€ to mount a new one, and I don't have all these money, and I dont wanna pay for something that is not my fault.

like u suggested I send a fedback telling them the problem and I hope they start to rapair for free, because these problem happen more often on retina and they repair the reTina for free, cause they ammitted that there is an issue with the mbp.

what make me very angry is that a genius in the Apple store show me a list of computer with the same issue and there was like two model before mine (MBP mid 2012 15") and three after, one of them was a retina of the same generation. If your computer is in this list they repair it for free, I found ridiculous that the same problem of all these generations, miss one of it. There is a problem In the mBp and they have to fix it.

I'm an apple user from 7 years and I never had a problem like this.

ill switch to other brand, cause theyre starting to make bad computer, is not like before.

I'm really sorry for the bad English, but I'm not a native speakeR.

Hi :

The problem davidh_10 have described is identical to what I am experiencing with my Macbook Pro 13' from Mid 2012. You are absolutely right there is something under the left Command key and when I lift the machine from that side I see the vertical lines followed by keyboard freeze and a crash. I have always used the machine with great care and never dropped or spilled anything.

As you suggested I will fill the feedback form as well to see if Apple can help us.

Here is my screenshot -

PROBLEM SOLVED

I had identical problems. The solution was a logic board replacement, which, if your laptop is covered under AppleCare warranty, won't cost you a dime. Otherwise it'll cost nearly $700 to be replaced by Apple.

My laptop was covered, and has run smoothly since.

PROBLEM SOLVED

I had identical problems. The solution was a logic board replacement, which, if your laptop is covered under AppleCare warranty, won't cost you a dime. Otherwise it'll cost nearly $700 to be replaced by Apple.

My laptop was covered, and has run smoothly since.

Just a warning as someone who had the same issue the same solution and now the same issue again. I have nothing more than the tiniest bit of conjecture on this, but it seems to me like this might be a temperature management issue. Try to avoid gaming or anything similar and maybe even install a temperature monitoring program

最後更新：2017-09-02 02:00:10

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