It is possible to enter Internet recovery mode, startup disk selection mode, Apple Diagnostics by using Startup key combinations.

But when I try to load recovery disk or MacOS boot disk(which show apple logo), it just boot loop.

I tried resetting SMC/NVRAM and it did nothing.

What's happening on my Macbook? I have no idea.

⟐ Commented abril 16, 2026 at 7:09 GMT-7

⟐ Answer edited abril 16, 2026 at 4:18 GMT-7

⟐ Commented abril 15, 2026 at 13:08 GMT-7

⟐ Answered abril 14, 2026 at 19:18 GMT-7

It seems completely dead, no sign of life.

The Magsafe led is briefly green, then stays orange.

The light is also orange if I unplug the battery from the logic board.

The battery was replaced by a repair place a few years ago.(non oem replacement)

There is no sign of corrosion/moisture ingress.

One of the sections of battery has inflated quite a bit and a couple other sections inflated a tiny bit.

I have tried unplugging the battery and MagSafe then holding the power button for over 15 seconds. But this made no difference.

With the battery plugged back in and the MagSafe plugged back in (and orange) I've tried the SMC reset (shift control option Power 10') and when released the MagSafe does go Green briefly and then goes back to Orange.

It seems pretty obvious that I need to change the battery but before I spend £80 on such an old laptop I wondered if there's any way to diagnose this further in case there's some other problem. Unfortunately, I don't have a spare charger to test.

Much thanks in advance.

⟐ Answered abril 14, 2026 at 17:38 GMT-7

After work (about 5 hours later) I found the keyboard keys weren't working right (no response to occasional response from enter, spacebar and delete keys, and one of the directional keys seemed to be constantly active - computer making bumping sound like incorrect key pressed), so I powered the laptop off and opened up the back to see if there was any liquid inside. The machine was bone dry inside, dust undisturbed with the only oddity being a slight coffee smell coming from the optical drive corner (drive was a little hesitant to release disk inside - took 2 tries to eject disk), but no smell anywhere else. Left the computer upside down for about a day to dry out some more (powered off) and popped off and cleaned the keys that weren't working with a damp cloth (water - dried thoroughly before popping back in place).

Powered the laptop on the next day and everything works except the keyboard. No response at all from any key, and the backlight only appears to be working in the very center of the board. However the computer does not sound as if it's working too hard, no overpowered fan noise, just operating normally. Currently is powered off and upside down with a small cooling fan on the keys.

Tried further drying by setting rice over the keys for a few hours, which was a mistake. Took a few hours to get the rice out that had seeped to the internals of the machine. I think there is still a rice piece stuck under the optical drive, but don't have the correct tools to pry it out yet.

Recently ordered a torc screwdriver to see if I can clean off the drive with some isopropanol, but not sure if I should replace the keyboard or not. Is there a way to fix it without replacing the whole thing? Would cleaning it with isopropanol as well help it? Should I try to clean everything since rice did get inside the machine?

My last attempt to turn my mac on left me a little fearful as the keys began to respond again, but not in the way they should have (pressed delete and got a letter on screen). It also befuddled me that my login screen popped up, when I have always had my mac set up to go directly to my home screen without a forced login. It had never acted up like that before, so I actually ended up taking it into the Geek Squad and am glad I did. It needed not only a new keyboard, but a new power button (which made sense to me as the power button was very hesitant to respond) and hard drive! Just lucky that I backed up my important files before sending it off! Expensive lesson, and I now have my mac ensured for any future problems. Thanks so much for your input!

⟐ Edited by author abril 14, 2026 at 9:51 GMT-7

I'm not sure what just happened.

I cleaned my screen with a tiny bit of water, but I guess there might have been a bit too much. I guess I was pressing down on the cloth to get rid of something in the corner. I've done this many times before without issue, but now there is a huge light blotch in the left corner of my screen. There is an odd rectangular shape near the bottom too that doesn't make much sense. Take a look at this image of a completely white window:

https://i.imgur.com/fp4G5IY.jpg

I've read that the classic rice method, and or heating the computer up for a long period of time might help it dry, but I'm not entirely sure it's only water that's the problem.

Anyways, hoping someone can help me understand the damage I've done and what I might be able to do, other than paying for a replacement :D. Thanks.

Time seems to have healed all wounds.

I ran the computer hot with a 'while true' loop for a couple hours and it burned most of the water off, and what was left is slowly disappearing.

⟐ Commented abril 14, 2026 at 8:46 GMT-7

⟐ Answer edited abril 14, 2026 at 8:38 GMT-7

⟐ Commented abril 13, 2026 at 16:54 GMT-7

I have MacBook Pro M4 A3112.(Nov'24). this is my first Macbook.

Initially display screen had some damage, so got the screen replaced and i notice both Wifi and Bluetooth has stopped working.

I took back to the repair guy who helped to replace the screen, but he has no clue why Wifi and Bluetooth are not working.

please find the attached the screenshots and photos I took as part of initial diagnosis I could do.

Please advise, what could be the issue and how to resolve this ?

Thanks

RB

Hi @danj

I did reformat whole Macbook and reinstalled OS. Seems issue still persists.

I connected the MacBook to my router using Rj45 cable with the help of connector so I can access wired network connection to internet.

However I tried to do offline diagnostic and I got the error CNW001 . Have attached screenshot.

Power charger wasn't connected to macbook when I ran the diagnostic so the error PPP020 can be ignored in the image here, as I see the MacBook is working fine when charger is connected.

Let me know what option i have to resolve this CNW001 error.

I am using wired connection for Internet for now, not a substantial solution.

Thanks

RB

I used an Ethernet cable and was able to connect to internet.

The pic was taken with ethernet cable on !

⟐ Answered abril 10, 2026 at 23:09 GMT-7

I researched a lot online and did the following:

• Disabled Energy Saver - Automatic Graphics Switching on both Battery and Power Adapter mode
• Disabled Spotlight indexing for specific types of content and also added folders like “/System” in the Privacy settings
• Reset the System Management Controller (SMC)
• Performed the Apple Diagnostics test (ADT - some older websites called it the Apple Hardware Test - AHT) and had no issues come from that.
• I also use Google Drive’s “Backup and Sync” and do lots of web development with `node_modules` folders, that can have 10s of thousands of small files which I think results in CPU churn. I’ve disabled it now.
• Shut down the computer and turned it back on. Still get same issues with the external monitor.

Now with no external monitor plugged in, every once and a while the kernel_task rises up to 300% and sometimes rarely to 500%. I’m curious if it is a software thing or a hardware thing. To me it seems more like a software thing.

I use VS Code for programming which can have a lot of background tasks, same with using node/npm which can probably be doing lots in the background. I also run iStat v6.30, and sadly I have only 21 GB of free space on my HDD (out of 500 GB…). Often I also have Slack open, and I know that’s a web app using Electron to run as a desktop application, which can be notorious for performance.

Often the fans can run high as well. I often suspect it is either due to the VS Code/npm/node/Slack thing, or kernel_task, or maybe something else I’m unaware about.

When checking memory usage via iStat, I can see that kernel_task is using 1.61 GB (oof, Firefox is using 6.36 GB).

Things I haven’t tried yet:

• Cleaning out more free space from HDD
• Using plain HDMI cable into the HDMI cable port
• Taking MBP apart and cleaning any potential dust

Has anyone had similar experience with this issue and how to address it?

OS: 10.13.6

Processor: 2.5 GHz Intel Core i7

Memory: 16 GB 1600 MHz DDR3

Graphics: AMD Radeon R9 M370X 2048 MB, Intel Iris Pro 1536 MB

⟐ Commented abril 10, 2026 at 3:05 GMT-7

Recently bought an early 2015 MacBook Pro 13" which had light water damage.

Opened it up and gave it a quick clean (rice everywhere...)

Only problem I can see is the MacBook can see the battery but wont charge and says it needs replacing (only 17 cycles)

The MacBook only works when connected to the charger.

Now I have a 2014 MacBook Pro 13" which functions normally.

Can I plug that battery into the 2015 model to test that it definitely is a problem with the battery before buying a replacement?

Don't want to waste money buying a replacement battery if that wont fix the issue.

Cheers!

*Update*

Info from coconutBattery

⟐ Commented abril 10, 2026 at 2:55 GMT-7

⟐ Commented abril 08, 2026 at 1:12 GMT-7

⟐ Commented abril 07, 2026 at 19:53 GMT-7

I never tried this method yet just wondering if there is another method possible, the system is running nice and smooth apart from this 'issue'. It seems that I will need to do a clean install again to resolve this. @danj Any Idea on how to 'resolve this'?

UPDATE 06/04/26 I booted externally into Catalina & then Monterey (Internally & Externally). I Clean installed Catalina externally & booted. I used OCLP to install Sequoia but STILL we have the firmware update which does not install. I guess we have to wipe the SSD (Original 512 GB SSD from the unit) which is still installed, and clean install either El Capitan or Monterey to see if that clears the issue.

⟐ Edited by author abril 06, 2026 at 18:40 GMT-7

The battery icon in the menu bar says 'Service Recommended' and shows 0% even after charging overnight.

What I’ve checked so far:

*The MagSafe light stays orange.

*I performed an SMC reset, but it didn't change the status.

*I checked the cycle count in System Report, and it's at 950 cycles.

Is it definitely time for a battery replacement, or could this be an issue with the DC-In board or the logic board charging circuit?

If I replace the battery, are there any specific tips for removing the adhesive safely?

Thanks!"

⟐ Edited abril 06, 2026 at 14:32 GMT-7

New logic board fixed that problem, got the computer running but a new series of issues has arisen:

1) originally the battery emblem had the grey X in it, and the power cord light is stuck green even though battery is not charged. Tried resetting NRAM/PRAM and the SMC, instead of fixing the issue the battery icon has disappear entirely. I also have tried running Coconut Battery which also does not detect the battery. Put a multimeter on the battery connection to the logic board and I am getting 3-12 volts on various pins (first thought was the DC in had gone bad).

2) Running High Sierra the settings menu Trackpad section does not detect the internal trackpad even though it is working. Instead it is stuck looking for a bluetooth magic pad. Trackpad works fine accept I can't change any settings and it does not recognize Right-Click. All other gestures work.

My question is, could this all be from a bad battery? Its like the computer thinks it is a desktop now the way the battery icon has vanished and it is looking for a magic pad. Im trying to avoid a 60-100 dollar battery unless I am sure it is the battery and not a module on the logic board, SMC, etc. Any recommendation are greatly appreciated for further testing or a definitive on what the issue is.

UPDATE: New battery has not fixed the issue. Battery is still not being detected by system settings or coconut battery. However, the logic board is drawing power as disconnecting the charger does not cause instant shutdown. System settings is still not recognizing the trackpad either.

I’ve reinstalled OS High Sierra from disk recovery to no avail. At this point I’m running out of options other than possibly a faulty logic board. I’m hesitant to call it that since the battery is providing power and the terminals on the logic board read 12v which would seem correct for a 10v battery.

Any other ideas on tests to run or hard resets are much appreciated. Only other hardware step that involes power is the MagSafe itself, which I may try to sneakily test one at a local Apple store before purchasing a new module. I’ll attempt to call iFIXIT regarding the logic board they sent me and see if they recommend trying another.

To recap: SMC and PRAM reset have not helped, reinstalling OD has not changed anything, Single User Mode fsck -fy has not repaired anything, replacing battery has only changed that the computer appears to be drawing power from the battery though not detecting it.

to be more specific, the battery icon will not appear. every time i change the setting to show battery percentage it resets the box to unchecked after a brief pause.

I've also tried reseating the RAM cards and the battery twice.

⟐ Answer edited abril 05, 2026 at 10:59 GMT-7

Actually I had no problems until I changed the battery. I changed the battery and ran it, I used it until it had 5% charge left and then I plugged it into the charger.

But, the next day when I turned on the computer, I got the error message that no battery was detected. I tried many things (PRAM & SMC). but the problem is that although it does not recognize the battery, it works with the battery and when I plug in the charging cable, the cable LED does not light up. there is also an excessive fan noise when running on battery and the fan never turns off. When I do SMC reset again, it does not see the battery again, but the cable LED lights Red and the computer shuts down when pulled.

⟐ Commented abril 02, 2026 at 11:40 GMT-7

⟐ Answer edited abril 01, 2026 at 4:01 GMT-7