I've just been through the same mess, details description of issue is as follow:
- Red horizontal lines display right after you startup, it will go on to show you the apple (still in red horizontal lines), then it show the gray screen, and your fans start running like crazy.
If you switch to Windows OS you'll be able to run on safe-mode, and the screen look like... well you know
My conclusion is the RAM, not normal issue, a special RAM issue. I followed these steps and fixed it:
Take out one RAM
- Reboot on recovery mode, (press and hold: command + R)
- Then it will display a crappy screen again still the apple sign
- Then it will turn blue.
Don't panic, shut it down this time do a PRAM reset (press and hole command + option + P + R)
If the RAM you are using is ok, everything should back to normal. If not, then replace it with the one you just took out and do the whole thing again.
I tried command + R alone, and it not work. I then tried PRAM reset (press and hole command + option + P + R) alone, it did not work. Only when I combined them, then it worked!
Also, it you put the faulty RAM in and take it out, even though you are sure the RAM is OK, the problem still exist without doing the process that I just described
Hope this helps, and stop paying Apple for non-sense things.
P/S: I keep wondering why all MacBook's suddenly have the same issue at the similar period. If Apple do this on purpose to make us purchase new stuff?
I have green screen and artifacts on start up . No OS-X on HDD. But when I boot on the windows everything's work fine. MBP A1286.
In windows I see only Nvidia graphics card.
Nikola Vukas 의
I had the same issue but just fixed now. My mc pro late 2011 got sudden freeze with vertical lines then shut off by itself. After restarting i see gray horizontal lines w Apple logo, logined w password and went thru process bar then white blank screen,, then after a bit shuts off itself. I tried RAM/PRAM reset, safe mode, recovery mode but nothing changes. I couldn't even get to the disk utility screen.
I saw this YouTube video, pressed alt after restarting to get to hard disk not recovery disk. connected to my WiFi for internet w password. It went thru the same login and everything, then went to blue vertical lines screen this time. Then it restarted by itself. Now the horizontal lines are gone. I went thru login and process bar. This time it went passed to my start up screen. Then restarted by itself. I went thru another boot up but this time all the way to where I got frozen and kicked off. Let it recycle for until get to start up screen. Thank god it isn’t broken.
Hope this helps someone.
Sarah w 의
I baked the logic board and it WORKED!!! Update- mine failed again after 3 hrs from initial fix; apple genius told me its dead w video test failed. I had nothing to lose so cleaned the heat sinks on thermal plates and bake the logic board at 375F for 7.5 min. Result? WORKS!!
The fried GPU is due to overheating lead free solder. So new logic board wont solve the basic issue. Baking logic board will reset solder if cracked, new heat sink will keep it cool. I got $10 silver thermal paste w cleanimg solutions. There are tons of tutorials on youtube/online. I forgot to remove my left speaker so it melted but only $10 part. My right speaker fine so it still works!! So dont forget to take the speaker out. Plastic will melt, so not over 400F. Solder melt at 360F so 375F is ideal.
Saved $500 or new laptop. Upon reassembled, the horizontal lines gone, slow but started up all the way where crashed. loud high fan issue - gone. This baking trick is common for gamers who blow up their graphic cards. Please try this!
Sarah w 의
Thanks. It worked on my 2011 MacBook and my HP dv7. I baked the motherbords for 8min @ 375F. Waited them to cool of and baked them again for 8 min at 375F!!!!!!!!!! Thank you!!!!!!!
James Yobe 의
Wow, im glad to hear someone was saved by baking. I wanted to add comment for another issue someone mentioned above about green screen. I encountered as well after all fixed by baking. I’ve got green flashing neons on my supposedly black part of graphics. The issue was loose graphic cable. Its on the upper right corner with black ribbon & wide flat cable w lever, next to left fan. I prob have not connected it firmly when I reassembled after baking. Disconnect, clean and reconnect. Its delicate piece so be careful. It was all good after that. I read this fix in another ifixit thread and worked.
Sarah w 의
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