I own a MacBook Pro 13' 2011 and my wife has a MacBook 13' Unibody late 2008. I recently upgraded the RAM of my MBP from 4GB to 8GB, but my wife only has 2GB in her MB.

The RAM of the MacBook is : 204-pin PC3-8500 (1066 MHz) DDR3 SO-DIMM

The one of my MacBook Pro is : 204-pin PC-10600 (1333 MHz) DDR3 SO-DIMM

My question is, can I put my old 2x2GB 1333MHz in her 1066MHz RAM slots without any problem ? Will it work ?

Thank you

⟐ Commented 1월 29, 2020 at 17:40 GMT-7

Thanks for the great site. I have fixed and repaired a lot of stuff using your guides. Clear and easy to follow!

Do you have any solutions to the wide spread MacBook Pro 2011 GPU Glitch?

http://action.mbp2011.com/

We are a lot of affected user that would love to get our MBP's up and running again.

Are there any hardware repairs or replacement one can do?

Here's a hack that sounds plausible but havent tried myself:

http://www.asyncro.com/2014/03/24/macboo...

Facebook group:

https://www.facebook.com/groups/2011mbp/

Thanks again iFixit would love to hear your feedback! Apple remains silent.

⟐ Answered 4월 13, 2022 at 0:33 GMT-7

I was wondering if there´s a way to replace/upgrade my graphics card.

On the System preferences I see that I have two graphic cards. One of those is integrated and the other one is using a PCIE connection, that's the one that I want to change.

Is that possible? Anyone did it?

Thanks you guys and thank you iFixit!!

⟐ Commented 10월 18, 2022 at 8:21 GMT-7

I found some annoy Screen issue when I shut down may MBP

Nov 23: I went to Apple Authorized Shop to check AR Coating issue, They accepted my case to change screen part.

Nov 27 noon: I got my MBP back with new screen.

Nov 27 night: I found this issue when I shut down. So I restarted many times, found this problem shown 9 in 10 times shut down.

Nov 28 noon: I went back to Authorized Shop again to show this problem to staff. They have check and said this issue can not found when Shut down by Safe Mode. It may cause of some software problem. So they suggested to me to format MBP and reinstall OS. So, I Agreed to do that. After 1 Hour for it to finish. I’ve checked many time by shut down at shop. This problem didn’t show again in that time or I came back and use MBP at home. their was no problem in that night Shut down.

Nov 29 night: This Issue came back again!!! I can claim Screen from Authorized Shop because still have 90 days replacing-part warranty but still concern that may damage from other part. My MBP has no Apple Care. and this issue never show before replace new screen.

This is my Screen when I shoot clip and capture shut down moment.

⟐ Commented 8월 04, 2022 at 11:29 GMT-7

This is my progress on removing the anti-glare coating after 2 hours. I tried Listerine, 90% alcohol, Peek Metal Polish, anti-bacterial wipes, bleach, and nail polish remover w/ acetone (before I read that someone else damaged the glass itself because of acetone). Luckily, my glass is still fine. Unfortunately, I haven't made much progress as you can see from the picture. I'm confused to why none of the solutions isn't working for me. Some said that Listerine alone worked well along with a microfiber cloth. I tried that but since it didn't work I moved on to try all the other solutions I mentioned. Is anyone else having this issue dispite of trying all kinds of solutions? And is there any other alternatives that would make it simple to remove w/o much time being spent?

⟐ Commented 8월 29, 2024 at 7:10 GMT-7

⟐ Commented 4월 28, 2020 at 10:30 GMT-7

Back to the original 4 GB RAM and starts up like a charm. High Sierra and all else is up to date. Tried running the EFI updater available for my machine and got message that it's not supported by my system.

Took out one of the 2 GB sticks and put in one of the 8 GB sticks. Started right up and system info says it is running 10 GB RAM. Took that 8 out and put in other 8 and same result. Runs great. So the RAM I bought is not bad and my RAM slots both work, but it won't run with both 8 GB sticks.

Anyone encounter this too and if so is there a way to get all 16 GB of RAM to work?

• Model Name: MacBook Pro
• Model Identifier: MacBookPro7,1
• Processor Name: Intel Core 2 Duo
• Processor Speed: 2.66 GHz
• Number of Processors: 1
• Total Number of Cores: 2
• L2 Cache: 3 MB
• Memory: 10 GB
• Bus Speed: 1.07 GHz
• Boot ROM Version: MBP71.003F.B00
• SMC Version (system): 1.62f7

If you need more system info to provide help, don't hesitate to ask.

⟐ Commented 9월 22, 2021 at 7:56 GMT-7

A1502, purchased in March 2014, has suddenly created a pretty nasty problem.

Went to boot one day and *chime!* but no screen. Apple logo on the back lit up, backlight was obviously working, but ZERO display workings.

Okay, so I plug in an external monitor. Nothing. "HDMI signal not detected." Okay, so I do the Googles, read the reddit, etc etc. Reset NVRAM/PRAM, reset SMC, no luck. Try booting Command+D Diag. mode, and output on external monitor! However, white progress boot bar hangs at 1/2way for 3.6 hours. So I Safe Boot (Power+Shift). Finally, I can use my external monitor! I can get into my mac and mirror displays, so that I can offload my data. Great.

I know the int. screen isn't working-- that's not the discussion.

Here's the question: When I boot normally in clamshell-closed mode, external monitor works perfectly. But the second I open the lid (i.e. use keyboard) EVERYTHING GOES BLACK AND TURNS OFF. Then, I must boot into safe mode to use the mac again! And the cycle repeats itself... What is the culprit here? Iris video card, Logic board, loose internal connector, or all of the above? Is the internal display issue and this issue related at all?

P.S. Congrats for getting this far. I know the writing is dense.

Thank ya much,

Nick Flint

⟐ Answered 3월 21, 2025 at 19:55 GMT-7

Lastly I saw an explanation on how to reset the smc which I did, not sure whether it worked or not but no change in the slowness.

⟐ Commented 7월 17, 2020 at 6:34 GMT-7

⟐ Answer edited 2월 26, 2022 at 8:37 GMT-7

In those 2.5 years, I never had a single problem, be it battery life or performance.

My Mac's condition:

• 98 cycles completed. Battery health 98-100% (istat menus' reading)
• It's always kept on charge and at 100 %. (This is how its been from past 2 years, except for once a month , intended battery drain to below 50%)
• Neither has the mac ever been dropped nor has water spilled on or in it. It has been handled with utmost care, and also, it hasn't traveled much.
• It's up to date (macOS 12.2.2)

So, day before yesterday I kept trying by pressing the power button again and again, tried doing SMC reset, then after a while like an half-hour so, It started. I used it the whole day, no problems at all and before I went to bed I just closed the lid (as usual).

Next day when I opened (Like after, 8 hours or so) It didn't turn on. I tried everything present on this and other forums, apple communities etc.., no matter how ridiculous they were (banging, shaking), it all went in vain.

Problem:

• Mac isn't turning on. Appears to be "dead".
• Neither does the fan start and nor does it make any noise when I press the power button. (I in fact, used a stethoscope to check, if it makes any teeny-tiny squeaky noise and NO, it doesn't).

Here are the things I tried:

• Did SMC reset.
• Even discharged it a bit by charging mobile device through Mac's usb port. and did SMC reset again.
• Sightly banged its four corners
• Shake mac, like I mean it

Finally, in the evening decided to open it up and disconnect the battery. The moment I started to unscrew it, I removed one screw, and just thought of checking once more, before I unscrew all. I pressed power button and BAM! it turned on. I instantly did SMC and PRAM reset, ran the diagnostic tool (no problems were found).

There were slight hiccups though, while doing resets, at time it was not turning on after reset, but may be after 5-10 min or so it turned on.

I then restarted and shut down mac several times, and it went all smooth. There was an OS update to 12.2.2 and I updated.

Same thing I did yesterday night, closed the lid and today morning when I opened it, It isn't turning on.

Do you think there may be any sort of hardware issue?

Please tell me is there anything else I should try. I'm not in a state to goto apple store, as the nearest one is 160 miles away and I have exams to study for and all my notes are in it.

Please Help!!

P.S : Sorry for the long post, I just wanted to make everything clear.

⟐ Comment deleted 2월 10, 2022 at 15:35 GMT-7

Identifiers: Mid-2012 13" - MD101LL/A - MacBookPro9,2 - A1278 - 2554*

I keep getting this panic error code on an endless cycle of rebooting:

panic(cpu 2 caller 0xffffff8021fbcf35): "process 1 exec of /sbin/launchd failed, errno 2"@/SourceCache/xnu/xnu-2782.18.72/bsd/kern/kern_exec.c:4868

Debugger called: <panic>

Backtrace (CPU 2), Frame : Return Address

VM Swap Subsystem is ON

then 7 lines of number code

and

BSD process name corresponding to current thread: init

Mac OS version:

Not yet set

Then stuff about the kernel version.

What does this mean? My SSD is only 4 months so I doubt it's an issue with that.

MacBook Pro, OS X Yosemite (10.10.2)

⟐ Answered 5월 06, 2020 at 9:05 GMT-7

⟐ Commented 5월 06, 2022 at 7:41 GMT-7

⟐ Answer edited 11월 23, 2021 at 18:04 GMT-7

Needless to say that battery is out of the equation now, but I still have a persistent fault. I initially tried all SMC/RAM resets, but it's a hardware fault for sure.

The machine will now only boot from a mains power source. The mag light stays green always but the battery icon is an x. Coconut Battery can't get _any_ details, charge, temp, etc all unavailable.

It's been this way for a while, such that now the internal battery is flat I expect, I can now only boot it via SMC bypass, leaving fans on full blast and there is now no battery icon at all. I'll get a new battery, if I thought the Logic board could be fixed.

I wondered if something in the SMC circuit area could be fried.

I've removed the whole logic board and carefully cleaned it up. I looked for any signs of damage, a burnt component or track but alas it all looks fine.

Are there some parts of the SMC circuit I can check, maybe some FETs or the SMC chip are dead, I could attempt to test/replace perhaps, if I knew where to look.

Any ideas?

Interestingly just noticed that while coconut can't find any battery stats at all (and maybe the battery is flat=dead now too) - it does say it can't detect a power source. It says Power Adapter: No Adapter Found. A clue maybe?

⟐ Comment deleted 5월 30, 2017 at 9:27 GMT-7

⟐ Commented 1월 06, 2025 at 6:57 GMT-7

⟐ Commented 12월 12, 2023 at 4:25 GMT-7

I've tried a micro fibre cloth, and special bought lcd cleaner, but its not worked, the smudges are all there still.

What is the best way to get rid of them if it is caused by some kind of soap? OR am i looking a paying for a costly replacement?

Please help!

⟐ Commented 7월 07, 2023 at 14:18 GMT-7

⟐ Answered 11월 14, 2018 at 11:57 GMT-7

Couple days later, and I noticed two things. One, my battery capacity has already dropped off to 5,252mAh (91% of factory capacity) after 5 cycles. Two, my computer had charged maybe 20% over the course of 4 hours while on power adapter. Coconut Battery reported it was charging with about 3.66 watts. I have noticed this issue from time to time.

Do you guys think it's the new battery? The power adapter and cord? Or perhaps the MagSafe power port? My power adapter and cord is not as aged; I had to buy a replacement about 4 years ago. The MagSafe port is showing its age somewhat; it definitely doesn't look very clean. When I reset the connection, sometimes it'll jump to a higher wattage for charging (like around 12 watts). One last time I noticed recently was that the LED would slowly dim out once in a while - weird!

Answers greatly appreciated!!

⟐ Answered 10월 01, 2020 at 21:15 GMT-7