I have a "Apple MacBook Genuine A1278 MB466LL/A MB466 Silver Touchpad & Cable 821-1254-A."

It's the internal trackpad from a modern MacBook Pro. It has some kind of 22-pin connector on the end of the cable. Does anyone know if it would be possible to convert this trackpad into a standalone USB mouse that could be used on another computer?

Here's a similar hack for older model Macbook Pros: https://www.youtube.com/watch?v=dVQKl-HV...

Thanks!

⟐ Commented августа 15, 2025 at 21:37 GMT-7

Anyone has something like that? How they solved your problem?

⟐ Commented февраля 05, 2023 at 20:51 GMT-7

I had done the same with my current Mac Book Pro 13" Late 2011 with the help of iFixit guides and its working perfectly ever since, but will it be possible for the current newer generation MacBook Pro?

Regards,

AS

⟐ Commented августа 03, 2022 at 4:57 GMT-7

⟐ Commented мая 04, 2023 at 14:53 GMT-7

⟐ Answered апреля 09, 2025 at 1:30 GMT-7

⟐ Answer edited декабря 14, 2021 at 12:22 GMT-7

Cheers

⟐ Answer edited июня 11, 2023 at 10:17 GMT-7

I would be happy to post a 'technique' article showing people how to access and test the power supply in this model if someone can help me determine their proper output values.

⟐ Answered октября 03, 2025 at 13:40 GMT-7

Deleted Files from Trash, can it be recovered?

⟐ Answer deleted сентября 18, 2020 at 4:26 GMT-7

This morning, I launched my MacBook and the trackpad and keyboard were not responsive. After about 30 seconds, a little window popped up saying "Bluetooth keyboard setup. There isn't a keyboard connected." I have left this window for as long as 15 minutes but nothing changes.

I have tried restarting my MacBook but this keeps happening. It has happened at least ten times.

I have also tried doing this in safe mode but this does not seem to make a difference.

I don't know if it matters, but for the past six weeks or so, I have been charging my iPhone 6s Plus via one of the USB ports. The cord is a little frayed and the connection isn't always perfect. When my iPhone would connect, it used to switch to the "photos" app, but it's hasn't done this for about a week, although the phone is still charging.

I have no idea what to do; my MacBook has now been rendered completely useless by this glitch. The keyboard and trackpad are completely unrecognised by the computer itself.

Any and all help are much appreciated.

⟐ Commented сентября 22, 2022 at 8:31 GMT-7

⟐ Commented сентября 18, 2023 at 13:43 GMT-7

Error: 8000000000000003, Cannot load 'EFI/Drivers/TestSupport.efi'

Status: 0x00000003

Which sits there for about five minutes, then it restarts into MacOS.

Same result when I try to run AHT from a USB stick, except this time it shows the above message twice – flashing by so quickly I had to get a video of it to see what it said – then immediately restarts into MacOS.

The OS version of Apple Service Diagnostic works okay (it has an OS on it, and shows in the Startup Disk preference Pane), but the EFI version gives the same result as above.

I've reset the SMC and NVRAM, and reinstalled the OS (Sierra) numerous times, to no avail.

I ran both AHT (Internet & USB) and ASD/EFI successfully a couple times only a few months ago; something's changed, but I can't figure out what.

However, MemTest86 (which also starts up from an EFI driver from a USB stick) still works fine with the MacBook Pro. So it seems this MBP is now somehow allergic to Apple's own EFI driver?

The same hardware (USB stick for AHT, external HD or USB stick for ASD) works fine with four other Mac portables, and two of them can access Apple Diagnostic (the 2014 & later version of AHT) from the Internet as they're supposed to (the others are too old to do so). So the problem is definitely something in this MacBook Pro.

The MBP was showing other problems as well; I sent it to a repair service, who said the GPU needed fixing (apparently common in this model), which they did, and said the logic board now tested all good. But it still "Cannot load 'EFI/Drivers/TestSupport.efi'".

I spoke with somebody at Apple Support, who was mystified, suggested maybe it had something to do with the SSD? The SSD seems to work fine otherwise, starts up okay etc., and DriveDx (which gives detailed readout of SMART parameters) says it is good.

Anybody have any idea what the problem might be? I plan to sell this MBP, but can't do so in good conscience as it is, even if it seems to be working okay otherwise.

Thanks for your response, Dan.

Yes! This is an issue with in Apples newer MacOS EFI/SMC updates.

When I posted the above, I thought it was a problem with my MacBook Pro; I've since learned that it's a common problem afflicting hundreds (at least) of Mac users. It is beyond ironic that the software Apple offers to its users to diagnose problems with their Apple hardware… doesn't work. So we're all waiting for Apple to get off their collective posterior and fix it.

There's a ton of people encountering this Unable to launch Apple Diagnostics Apple altered the EFI so all versions of MacOS are effected from Sierra on up is where I've seen it.

Yes, I also posted my query at Apple Discussions: MacBook Pro 2013 - cannot load Apple Hardware Test, and was referred to the Unable to launch Apple Diagnostics thread (which now has 163 "I have this problem too" clicks, while mine has 5). See my posts here and here for more detail and follow-ups.

I spent an hour and a half on the phone with an Apple Senior Advisor on Tuesday (May 28) about this issue, trying everything he could think of (he apparently hadn't heard about this before), ending with sending a bunch of information, which he said would be forwarded to some "engineers", who would get back to me in a few days. I provided links to the two Apple Community threads and emphasized that there are over 150 people now waiting for an answer. I'll post whatever I hear in the Unable to launch Apple Diagnostics thread, for anybody who's interested in following the issue.

The Apple Hardware Test (AHT) repair doens't fix this in Mojave.

Not sure what you mean about the "AHT repair"; the link is to a very helpful post at GitHub that tells how to get and use AHT for various old Macs dated prior to June 2013, when AHT was morphed into Apple Diagnostics, which is now available only over the Internet (or from the Recovery partition in High Sierra or Mojave, as I discovered in my research). See my second post in Unable to launch Apple Diagnostics for more detail about AHT/AD. Anyway, AHT doesn't "repair" anything; it's a simple diagnostic utility – and it won't load/run in any of the Macs that Cannot load 'EFI/Drivers/TestSupport.efi'.

Apple holds the cards for their diagnostic software. You could try calling them most likely they'll send you to a authorized service center if there's one near you.

Oh, yeah, about that… All this started for me in early 2018, when the intermittent crashes etc. I'd been experiencing with this Early 2013 15" MacBook Pro finally became intolerable. I didn't want to be without a computer while I was figuring it out, so I bought a 2015 MBP (still new with warranty, found on eBay). I then took the 2013 MBP to the local AASP, asked them to diagnose it, for which they charged me $60. Presumably they ran Apple's in-house diagnostic utility/ies.(The guy said something about the "EFI version"; I didn't know what that meant at the time.) They told me the 2013 MBP was fine. (The new 2015 MBP turned out to have problems also, and I ended up struggling with both – along with my long-term chronic illness – all year, until finally early this year I got together enough energy to try to deal with them.)

But my MacBook Pro wasn't fine. So I bit the bullet and did some research, learned that both Apple Hardware Test and Apple's pre-2015 in-house diagnostic software Apple Service Diagnostic could be found on the 'Net. So I got them, figured out how to use them, and they both found both several memory problems and a few others that are more of a mystery to me (I'll be posting those elsewhere here to ask if anybody can figure them out).

I was able to run both AHT and ASD on the 2013 MBP several times, until suddenly in the last month it told me it Cannot load 'EFI/Drivers/TestSupport.efi'. (It still runs the OS version of ASD, but won't run the EFI version.) It seems likely the fact that I'd installed both High Sierra and Mojave on it a month or two before, which may have changed the Boot ROM version (I don't know what it was before) might have caused this problem. Although, as noted in my post at Apple Discussions, I recently experimented by installing Mojave on a 2014 MBP, which didn't change the Boot ROM version, and didn't cause the Cannot load 'EFI/Drivers/TestSupport.efi' error. So we still don't know exactly what's going on.

Anyway, the nearest Apple Store is too far away for me as well, and my experience with the local AASP does not give me much confidence.

The ball is in Apple's court.

⟐ Commented декабря 26, 2021 at 3:17 GMT-7

I am looking for a quick, viable solution to the Apple "StainGate" issue, one that does not take hours. We are looking for an in-house solution that can remove the coating "assembly line" style while the screen is left in place.

I have read through various iFixit forums, but am looking for a faster, easy to repeat process.

Issue: When using certain cleaners, the anti-glare coating becomes permanently "blotched". Apple is aware of this issue (see first link below) and has extended the warranty on the laptops with this issue, however this is not a solution for us (many of the units fall out of this extended warranty).

The other solutions we have seen are people removing the blotched antiglare coating with metal polish, however, when we tried this solution it took repeated applications and was an extremely slow process (see our tech note below). We even tried it with a hand held buffer as well as various solvents.

This was from our tech:

The process take a lot of time. Quite tiring

I tried it on my Macbook (2014 Retina 13") Though it does work (I used rubbing alcohol and Peek like the video) some parts came of really slow.. took dozens and dozens of applications, after an hour or so maybe 15% was done. Next day I continued, but this time I pre-wiped the screen with Bison Magic Wipes (for paint removal) after another hour doing Wipes->Peek rubbing->Ethanol cleaning the whole screen was smooth as a baby butt :-) The magic wipes really loosened the coating. Also while doing it the screen looks terrible.. just be patient and after a few hours it will look great!

And that’s just for one unit…

See: Apple Extends Free Repairs of Anti-Reflective Coating on Select MacBook and MacBook Pro Models

One person said what worked best for them was Peek Metal Polish (actually also polishes acrylic, etc) followed by rubbing alcohol for removing the anti-glare coasting. Also PolyWatch for the fine screen scratches. But again, these processes were too time intensive.

And:

• YouTube: MacBook Retina Screen Anti-Glare Coating Removal Cleaning Scratch Stain Problem Fix
• YouTube: Macbook Pro Screen Staingate Problem - Removing the Oleophobic Coating

Any input would be welcomed.

Thanks!

⟐ Commented июня 27, 2023 at 6:21 GMT-7

It has been working fine and just today it stopped all of a sudden. I have absolutely no clue what happened to it.

It kept searching for a bluetooth keyboard. However external keyboard and mouse works, but whenever i unplug them nothing else works.

Power button is the only button that works.

My macbook is currently OSX 10.9.5

I searched on sites and it appears late 2013 had a EFI update that fixed it but i couldnt install any EFI update on my macbook pro.

⟐ Answered сентября 06, 2022 at 23:48 GMT-7

The case on the back of the screen seems to have come unglued at one corner. When I close the screen one corner doesn’t sit flush. You can lift the flap up enough to see the glue that was meant to be holding it together. Is there a way of re-glueing this back? Or any other suggestions?

As you can see the screen is fine, still attached to computer, but the actual case or shell of it has come away.

When I pry it open a little it is possible to see where the glue was which stuck it down. Do you think I should try to glue it back? When I squeeze the lid down gently it fits back into place. If I were to glue it back is there a special glue I should use? A heat resistant one?

cheers

⟐ Commented сентября 09, 2019 at 22:22 GMT-7

⟐ Commented апреля 03, 2023 at 13:18 GMT-7

Thanks! -Zach

⟐ Commented июня 21, 2024 at 21:01 GMT-7

On power up, my MacBook Air beeps three times continuously.

beep beep beep (short break) beep beep beep (short break)....

Any ideas.

thanks.

Frustrated!!

I feel really ripped off! I bought the macbook Air 13" shortly after the warranty expired. The thing is practically perfect. Now I come to find out that the ram is bad and there's not a thing I can do about it. I tried to to Hold Command +P+R and still nothing.

JC

⟐ Commented февраля 07, 2023 at 11:46 GMT-7

Current HDD is causing problems and is running out of space (2tb) looking to put in a 3tb or 4tb if available.

Make and models recommended would be a great help too

⟐ Answered апреля 02, 2023 at 18:48 GMT-7

People said that i should go to disk utility and unlock the locked disk there

But the locked disk wasn’t there

And even if its there, i don’t know the password too. And I can contact the owner anymore

⟐ Commented декабря 03, 2022 at 9:20 GMT-7