Hi,Around two days ago I was about to move my workhorse to the kitchen, to do some culinary research (read: how to boil potatoes) when my MacBook just turned off when I disconnected the charger. I've had this problem before, which went away after a short while by itself. I just pinned it down to magnets or magic.

1. Laptop Turns Off When Power Cord Is Removed Windows 7
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3. Laptop Turns Off When Power Cord Is Removed

Laptop turns off when power cord is removed Windows 8 Levono yoga laptop (self.techsupport) submitted 3 years ago by colettek My laptop unexpectedly turns off, when the battery charger (power cord) is unplugged. .PROBLEM. If the power cord is not plugged in and I hit shut down the computer acts as if I pressed restart (shuts down and turns itself back on). If it's turned off and I remove the cord it will turn itself on, even if the lid is shut.

After a while of being mildly annoyed by it shutting down, I began testing the battery in TechTool, which gave me virtually no information save for the fact that the battery is just maintaining its charge, but not actually getting any.The battery indicator shows a 100% charge, as does Coconut Battery, which should mean that it's not the SMC. I did an SMC and PRAM reset, though it's unclear if it did anything at all. I'll try an SMC bypass and see if that does anything at all and update on this.Logic tells me that it's the I/O board which is fooling around, but given my current financial situation, I don't want it to be. So, bottom line, is there any way to be completely sure that it's due to the I/O board, and/or any good way to fix it? Any help will be very appreciated and will hopefully help others in the future too. This 'chosen solution' for this question didn't work for me, but this one from CNET did. All I had to do was reset the PRAM and keep the buttons held down until I heard THREE OR MORE startup chimes.

Problem resolved completely.MacBook Pros suddenly shutting down when disconnected from power adapter; not running from battery - more fixesBYCNET STAFFSEPTEMBER 2, 2009 7:10 AM PDTAn in-house MacBook Pro recently began exhibiting this issue, and the fix that eventually worked was resetting the PRAM with a twist. Apple indicates that resetting the MacBook Pro's PRAM requires holding down the Command, Option, P and R keys at startup until two restarts occur.

Laptop Turns Off When Power Cord Is Removed Windows 7

However, we found that waiting for three or more startup chimes while resetting PRAM resolved this issue where waiting for only two chimes did not.by. `It may be that you have to use CNET's solution AND replace the Magsafe adapter.I've had zero problems with this issue since posting that message and resolving it with CNET's solution, UNTIL I was away this past weekend and threw the old Magsafe in my bag and left the newer one I usually use. The issue returned (MacBook Pro goes dead when Magsafe adapter removed and needs to be rebooted).But when I got back home and used the newer Magsafe adapter I usually use, no more issue, and didn't have to do the CNET solution all over again.I DID have to do the CNET solution with the newer Magsafe adapter initially and have not had a problem since, so the solution (for me) was:1. Replace the Magsafe adapter.2. Use CNET's solution as outlined above.Running fine.by. I bet you didn't read my post in which I said I reset the SMC.

As far as my battery goes, I try my best to not have it plugged in most of the time and give it a chance to fully empty out before plopping the charger back in. However, I did just open the MacBook up and tinkered with a few wires, which seemingly did nothing. Then I did an SMC bypass (unplugging the laptop, holding the power button for 10 secs, plugging the computer back in while holding the power button for an additional 10 secs and then releasing and pressing it again to get it to boot) which got it up and running without a charger plugged. From there, I just did yet another SMC reset, booted in safe mode, checked TechTool and everything looked positive - this time with a 0% charge (as opposed to the 100% charge reported earlier).

No clue what caused the Mac to report a faulty battery/I/O board, but we're back to normal. Again we can nail this down to magnets and magic.by. Hi,I begun having a similar problem after installing a new battery in my MacBook Air, by myself. What I discovered after deciding the problem may be internal is that the battery connection (don’t know if I can call it that) to the logic board (or is it motherboard?) disconnects itself continually after a period of use. So far I’ve had to reopen my laptop and reconnect that connection 3 times!!

Since I installed a new battery. I don’t know what is the end solution to this. I’m beginning contemplating gluing them together!!!

So I’m afraid what you have to do is take your laptop to hardware tech experts who will most definitely have a solution for you.by. It's certainly not the battery, that's for sure. It's a NewerTech battery, still with 103% health, and all tests show it's in good condition. The fact that it shows up in TechTool and Coconut Battery is a good indication that it isn't disconnected. I'll pry open the computer now and see if that'll teach me something, but experience tells me I'll just blankly stare at its insides and wonder what I'm looking at. And as we all know, the difference between me and a PC repair shop is mainly that they charge me for doing the same thing I do; staring blankly at it. I appreciate your answer, and I'll have a look inside to see if something is looking awry.by.

Power Outlet

Sorry, your SMC reset instructions (with the buttons) are incorrect.The battery, while replaceable, is not considered by Apple to be user replaceable, that is why there is a secret screwdriver screw, the three-fin thing, so you have to follow the instructions for non-replaceable batteries. I know, it is really confusing and dumb.Here are the proper instructions: Notice it says to UNPLUG the adapter, and HOLD THE BUTTONS FOR 10 SECONDS.But anyway, your instructions for resetting the SMC by unhooking the battery and pressing the power button. That might work. Or maybe press it longer, like the chosen answer for this question suggests.by. The Chicken and the Egg problem;-The premise here is once SMC is reset it does not have either a high or low threshold set. So once done you need to completely drain the battery until SMC see's the low threshold voltage wise has been hit it will then shutdown. Now recharging the battery and then repeating will set the high point.

That should do it!Now the but! The voltage comparator logic on the logic board needs to be working properly. If SMC is prematurely shutting down after a reset there is a problem on the logic board. Often corrosion has built up on the one or more of the components that set the value or the chip its self is defective.by.

You may want to try resetting your machines SMC. This can sometimes help with battery/power related issues:Be sure to follow the instructions for your specific machine as they vary from model to model.If you click on the Apple logo on the top left of your display, select 'About this Mac' and then 'More Information'. On the left column, select 'Power'. On the right column, copy the information pertaining to your battery (cycles, health, etc) and post it here so we can tell if there is a problem with your battery. Hi there, I am a bit of a novice when ti comes to things like this but my battery is refusing to charge. Any tips guys?

Here is the info you described:Battery Information:Model Information:Serial Number: DP-ASMB016-3768-116eManufacturer: DPDevice name: ASMB016Pack Lot Code: 0002PCB Lot Code: 0000Firmware Version: 0110Hardware Revision: 0500Cell Revision: 0102Charge Information:Charge remaining (mAh): 0Fully charged: NoCharging: NoFull charge capacity (mAh): 0Health Information:Cycle count: 627Condition: Check batteryBattery Installed: YesAmperage (mA): 0Voltage (mV): 8147. In your case, it looks like it's just time for a new battery. Your battery should hold a full charge for up to about 300 cycles. At that point, you should expect a decline in the charge capacity. As your battery has over 600 cycles, it sounds like it's had a good life. As you've had your MacBook for less than two years, it sounds like you are possibly using more cycles than necessary. You should try to use your MacBook while plugged in the majority of the time.

But occasionally use it on battery (going through one or two cycles a week). A full cycle is a full charge and discharge.

For example, if your battery is at 100% and you let it discharge to 90% and then you charge it back up to 100%, that is 1/10th of a cycle. You would need to do that 10 times to equal one cycle. If you started at 100% and let your battery discharge to 50% and then charged it up to full, that would be 1/2 cycle. Doing this twice would equal one cycle.

The number of cycles is the primary indicator of the life of your battery. It sounds like you are using your MacBook mostly on battery (with over 600 cycles in less than two years).

Laptop Turns Off When Power Cord Is Removed

After you replace your battery, try to run it plugged in for the majority of the time if possible. Many people are mistakenly under the impression that they should fully discharge their battery before charging it. This is not the case with Lithium Ion/Polymer batteries. This was the case with Nickel Cadmium or Nickel Metal Hydride batteries (much older rechargeable battery technologies). It seems many people still feel that the memory effect of the older battery technologies applies to newer battery technologies. Just the opposite is true. Apple Footer.This site contains user submitted content, comments and opinions and is for informational purposes only.

Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the.