Macbook Shuts downs without any warning.

Hi All,
Recently I have noticed that my Macbook shuts down without any warning when the battery is out of power. Previously i used to get a warning when about 9-10 mins of power was left.
I have all the updates installed. Also I have not installed any new hardware.
Is there any settings in the System Preferences. What should I do to correct this situation.
Best,
Siva
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 4600
Remaining Capacity (mAh): 3580
Amperage (mA): 1542
Voltage (mV): 12220
Cycle Count: 113

I'd try a SMC reset - that usually clears battery/power related settings and might do the trick.
Blackbook C2D Mac OS X (10.4.9) 120Gig, 1Gig, Superdrive.

Similar Messages

Laptop shuts down without any warning

My laptop is shutting down without any warning. It has done so twice. When I run the preboot diagnostic, everything is fine. When I run Dell Support Assist app, this is the error message that I got from the System History:
Application Error
Fault bucket 86066676302, type 4
Event Name: APPCRASH
Response: Not available
Cab ld: 0
Problem signature:
Pl: DllHost.exe
P2: 6.3.9600.17415
P3: 54504134
P4: StackHash_216b
P5: 6.3.9600.17736
P6: 55014336
P7: c0000374
P8: PCH_CF FROM_ntdll+0x000000000009177A
P9:
P10:
Attached files:
C:\Users\Raymond\AppData\Local\Temp\WER6C2E.tmp.WERInternalMetadata.xml
These files may be available here:
C:\Users\Raymond\AppData\Local\Microsoft\Windows\WER\ReportArchive\AppCrash_OUHost.exe_fcb15f1d8bcda961763f8dc9a8f899f8621977b_30a79b3d_14cf863e
Analysis symbol:
Rechecking for solution: 0
Report 10: toala596-eca4-11e4-bfac-08edb9244ef6
Report Status: 0
Hashed bucket: 7b43e3b419dd3feaa74b55be5e190271
These files may be available here:
C: \Users\Raymond\AppOata \Local\Microsoft\ Windows\ WER\ReportArchive
\AppCrash_OUHost.exe_fcb15f1d8bcda961763f8dc9a8f899f8621977b_30a79b3d_l4cf863e

Hi ,
Thank you for writing to the Dell Community Forum.I am Jennifer and I work for the Dell Social Media Team .
To assist me to resolve this issue I would suggest you to try these steps and advise the result ,
*)Is this issue seen with all applications and any particular applications.
*)When the system crashed did you experience any over heating issue.
*)May I know the operating system installed on the system .
*)Would suggest you to work on this system in safe mode with networking then test if the same issue is seen .
*)Also as you mentioned that with the preboot diagnostic the system passed all the test so the system's hardware is working fine.
If there are any more queries do reply to this post with the system model ,operating system installed on the machine, service tag of the system(sent via private message) so that I can look into the details of the system and assist you better .
Awaiting a reply from you .
Kindest Regards,

MacBook shuts down without warning

My MacBook is a couple years old and the battery might need replacing, but after about an hour of use - many times less than an hour - the computer just shuts downs without any warning at all. Is this a battery problem or a OS problem?

Thanks Lyssa,
You've actually suggested solutions on this same problem, but since they did not work, I thought I coming at it from another angle it might help.
Battery Information:
Model Information:
Serial Number: DP-ASMB013-3526-3e9
Manufacturer: DP
Device name: ASMB013
Pack Lot Code: 0001
PCB Lot Code: 0000
Firmware Version: 0102
Hardware Revision: 0300
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 4116
Fully charged: No
Charging: No
Full charge capacity (mAh): 4571
Health Information:
Cycle count: 154
Condition: Good
Battery Installed: Yes
Amperage (mA): -1539
Voltage (mV): 11133
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 20
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: Yes
Display Sleep Uses Dim: Yes
Battery Power:
System Sleep Timer (Minutes): 15
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 5
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: No
Charging: No

My MacBook shuts down without warning. Recently installed snow leopard. Battery is fine. Any ideas?

My MacBook shuts down without warning. I recently installed Snow Leopard and increased my RAM/Memory. My battery is fine. When I took it to the Genius Bar and they ran a diagnostic, nothing showed up. It appeared fine and did not shut down during the time I was in the Apple Store. Of course, once I made the two-hour drive home, my computer shut down within two minutes of using it. Any ideas? Do I need a new computer? This one is about 5 years old.

Sounds like a buggerd battery chip. If the MacBook turns off at a certain percent all the time, then your battery's status chip is damaged and is (quite literally) lying to Mac OS X.
If it is actually hitting 0%, then temperature could be an issue or a there may be an issue with the battery itself.
My advice: you may need to get a new MacBook as a new battery for 2006-model MacBook may be hard to come by (and defintiely no warranty support from Apple).

After updating my software from snow leapord to mountain lion my MacBook Pro suddenly keeps shutting down without any reason no warning suddenly just restarts... Can someone help

After updating my software from snow leapord to mountain lion my MacBook Pro suddenly keeps shutting down without any reason no warning suddenly just restarts... Can someone hel

Note the date and time the problem occurred, then go to Applications/Utilities/Console and copy the log starting at the time of the crash. Paste the log in a reply. Please do not use a screen shot as they can be hard to read. If there are repeated runs of the same messages, please post only one run. Be selective about what you post and don’t post huge amounts. Make sure there is no personal data visible. Information learned from Linc Davis.

Imac shuts down without any error message

imac shuts down without any error message

Need more details. Which iMac? Which OS? When does it shut down, under what circumstances? What are you doing when it happens? Is it reproducible, i.e. can you make it happen? Does it appear to be getting very hot before it shuts down?
Open Console in Applications>Utilities and navigate to system.log. Do you see any messages related to shutdown from the time when this has happened? Enter "shutdown" in the filter field, upper right corner.

MacBook shuts down without warning during calibration (39% battery power)

My MacBook has been shutting down without warning during recent calibrations (which I've done approximately every two months). Most recently it shut down after 2 hours and 20 minutes on battery power with a battery reading of 39% -- i.e., nowhere close to the 0% of a fully rundown battery.
The result is that:
I'm not seeing the 'low battery' warning dialog before the computer shuts down; and
(ii) I'm not able to save current work and close all applications when the battery's charge gets low, before the computer goes to sleep (because it just shuts down without warning)
Can I do anything about this? Is it just an unavoidable indication of declining battery performance?
My MacBook is 15 months old. Current 'battery information' is listed below.
Thanks. Replies appreciated.
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 4792
Remaining Capacity (mAh): 4790
Amperage (mA): 0
Voltage (mV): 12477
Cycle Count: 23
------------------------------

stevenray1 wrote:
1. I'm not sure how to match the path you listed re: the '1.3 battery update' to what's on my MacBook. Maybe I just don't understand how to interpret it, but I don't have a root folder (or any other folder) identified as 'MacBook.' When I used Spotlight, I also didn't come up with a BatteryUpdater.bundle. A file named BatteryUpdate2007001.pkg was all that Spotlight turned up.
On my MacBoook my hard drive that I boot from is named Mort's MacBook. Yours may be similar I don't know. It is the drive you boot from. Mines shows in finder as the top level drive. The next level in column view. Then you find the System file and go from there.
If your not sure what you named your drive or which one it is click the apple in the upper left corner and then pick *About This Mac* You then should see *Startup Disk* and next to that the name is what you refer too when you look for the folder path I gave.
2. You recommended resetting the SMC. However, the info file you provided a link for says it shouldn't be "necessary except as a last resort in cases where a hardware failure of the power management system is suspected." Does that accurately describe the condition I reported? Also, the problems listed as possible reasons to reset the SMC don't include the one I posted about.
The reason I suggest resetting the SMC is that your changing one of the components that is controlled by the functions of the SMC. The battery is a big part of the system which the battery update changes. To get it to be sure to recognize the new bundle you reset the SMC. The instructions linked are not all inclusive but if you don't want to reset it that is up to you.
3. Similarly, re: the 1.2 Battery Update, it's not clear to me that any of the listed 'symptoms' of a faulty battery apply in my case -- unless what I reported indicates a "+low charge capacity/runtime+." Does it?
The battery update instructions are again not all inclusive. If you don't want to do it that is fine. All I know is you have a MacBook Pro update installed at the moment. You don't have a MacBook Pro. This suggestion of mine has helped many people with problems as reported by you. You do not have to do anything you don't want. That is your choice. Is your battery cutting off at 39% considered normal operating or capacity to you? I personally would call it a faulty battery, but thats just me.
What would be your definition of a faulty battery?
4. Apparently, you had a faulty battery which Apple replaced. I wasn't sure from your message whether you had other things going on that made it clear you had a faulty battery, or only the same symptoms I reported. Were there other power-related problems in your case, or only, as you wrote "the same thing as yours except mine cut off at 28%"?
I guess I misunderstood your original post, everything yours was doing mine was doing except mine cut off at 28% not 39%. I can only give advice on what you post. Are there other things happening that you didn't mention?
My idea of a faulty battery must be different than yours. If I don't get warnings I should and the battery does not work like it used to then that is a faulty battery in my opinion.
If your not comfortable with any of my suggestions contact Apple support and maybe they can help you. Possibly one of the other posters on here can give you different advice that you agree with. Never do anything advised in the forums unless you agree with it.

12 inch shuts down without even warning me

ok I have year and half old 12 inch 1.33Ghz G4 powerbook. Lately i cannot work on battery charge for longer than 30 min, if lucky and then it shuts down without even asking me to recharge. I did few power management unit resets that didnt work. My local applr genious bar is full of grandmas asking where is @ on the keyboard, so i am scheduled for next century. What should i do. Here is the screen of my coconut battery status.
[img=http://img20.imageshack.us/img20/1456/coconut6qd.th.jpg]
PowerBook G4, 12inch Mac OS X (10.3.9)

Gil,
Welcome to Apple Discussions.
"When I charge the ring is always green, never amber."
This is NOT normal. The power adapter and battery are not "connecting" properly as to why your computer shuts down within minutes of unplugging. It could be the adapter. On occasion (more often with my 15" Ti), I have to wiggle the cord (near the ring) to get the light to change from green to amber.
Try another power adapter. If you do not have another adapter, borrow one from a friend that does or go the Apple store. Or try another battery to test the adapter. Also, if you have not already done so--try taking the battery out and putting it back in and then plug in the adapter.
"The battery issue seems to be new..."
Not really. It is a problem with lithium-ion batteries in general. PC portable users have this issue too. In my experience, these batteries tend to last about two years (dependent upon each users definition of sufficient charge to meet his or her needs). Apple claims 80% of original battery capacity after 300 full charge and discharge cycles. Some people say the battery life is 500 cycles. You can check the number of battery cycles in System Profiler.
Hope this helps.

My mac pro shut down without any reason!

I have a Mac Pro 8 core XEON with OSX LION, 22gb Ram, Ati 1gb to conect an Apple Led Cinema 27" anda Apple HD Cinema 23", two hard drives 1tb and 350gb, 2 external hard drives 500 gb, and 1tb.
Now frequenly my mac shut down without anyreason, sometimes doesnt start up properly and a i have to restart.
What can i do to solve this problem?
I have my mac pro and all the other thins conected to an UPS.

diapoh wrote:
i think maybe is the operating system! i don´t know! theres not reason for over-heating...
Mac pro's are "dust magnets" and suck it in all the time it's on. Open you mac pro (you won't harm it) and drag you finger across some of the bear metal parts. Can you write "wash me" on it like a dirty car? Probably can.
This same dust gets on (an in) everything inside. All the air intakes and exhausts and components. The video card has the same problem. The dust builds up on all these components so they don't dissipate the heat as efficiently and end up running hotter and hotter as more dust builds up.
This was the reason my first suggestion was blow out the dust (and if there's enough dust do it outside so you don't breath it in yourself).
As mentioned above you should install a temperature monitoring utility like iStat Pro, iStat Menus, Temperature Monitor, Hardware Monitor, etc. Then you can monitor many of these temps yourself.

My Safari shuts down without any reason

My Safari shuts itself down after some time EVERYTIME I use it ..
it takes 5 min to one hour, and it just closes itself without warning or message ...
It just vanishes from the Dock
here is the log from the console :
13.12.12 21:00:09,727 Locum[443]: Connection with distnoted server was invalidated
13.12.12 21:00:53,691 Locum[448]: Connection with distnoted server was invalidated
13.12.12 21:00:56,000 kernel[0]: smb_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
13.12.12 21:01:17,777 Locum[456]: Connection with distnoted server was invalidated
13.12.12 21:01:57,179 mdworker[462]: Unable to talk to lsboxd
13.12.12 21:01:57,184 mdworker[461]: Unable to talk to lsboxd
13.12.12 21:01:57,290 sandboxd[463]: ([462]) mdworker(462) deny mach-lookup com.apple.ls.boxd
13.12.12 21:01:57,298 sandboxd[463]: ([461]) mdworker(461) deny mach-lookup com.apple.ls.boxd
13.12.12 21:01:57,000 kernel[0]: Sandbox: sandboxd(463) deny mach-lookup com.apple.coresymbolicationd
13.12.12 21:02:07,762 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[427]) Could not terminate job: 3: No such process
13.12.12 21:02:07,762 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[427]) Using fallback option to terminate job...
13.12.12 21:03:01,916 Locum[469]: Connection with distnoted server was invalidated
13.12.12 21:04:11,717 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[474]) Could not terminate job: 3: No such process
13.12.12 21:04:11,717 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[474]) Using fallback option to terminate job...
13.12.12 21:04:24,021 Locum[482]: Connection with distnoted server was invalidated
13.12.12 21:04:47,417 com.apple.ShareKitHelper[236]: --warning: [ShareKit-XPC] Received XPC_ERROR_CONNECTION_INVALID
13.12.12 21:04:47,418 com.apple.ShareKitHelper[236]: --warning: [ShareKit-XPC] connectionWithClientInterrupted
13.12.12 21:04:47,419 com.apple.ShareKitHelper[236]: --warning: [ShareKit] Cancel UI for running services with Client PID: 302
13.12.12 21:06:58,507 WindowServer[74]: Created shield window 0x14c for display 0x04273140
13.12.12 21:06:58,507 WindowServer[74]: device_generate_desktop_screenshot: authw 0x0(0), shield 0x0(0)
13.12.12 21:06:58,515 WindowServer[74]: device_generate_lock_screen_screenshot: authw 0x0(0), shield 0x0(0)
13.12.12 21:11:12,446 mdworker[495]: Unable to talk to lsboxd
13.12.12 21:11:12,450 mdworker[494]: Unable to talk to lsboxd
13.12.12 21:11:12,557 sandboxd[496]: ([495]) mdworker(495) deny mach-lookup com.apple.ls.boxd
13.12.12 21:11:12,569 sandboxd[496]: ([494]) mdworker(494) deny mach-lookup com.apple.ls.boxd
13.12.12 21:11:12,000 kernel[0]: Sandbox: sandboxd(496) deny mach-lookup com.apple.coresymbolicationd
13.12.12 21:11:23,029 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[487]) Could not terminate job: 3: No such process
13.12.12 21:11:23,029 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[487]) Using fallback option to terminate job...
13.12.12 21:12:21,311 WindowServer[74]: handle_will_sleep_auth_and_shield_windows: no lock state data
13.12.12 21:13:09,891 librariand[504]: MMe quota status changed: under quota
13.12.12 21:14:23,516 Locum[519]: Connection with distnoted server was invalidated
13.12.12 21:15:19,862 Locum[524]: Connection with distnoted server was invalidated
13.12.12 21:15:34,229 Locum[527]: Connection with distnoted server was invalidated
13.12.12 21:15:51,471 WindowServer[74]: _CGXSetWindowHasKeyAppearance: Operation on a window 0x17 requiring rights kCGSWindowRightOwner by caller Dashboard
13.12.12 21:15:51,473 WindowServer[74]: _CGXSetWindowHasMainAppearance: Operation on a window 0x17 requiring rights kCGSWindowRightOwner by caller Dashboard
13.12.12 21:15:54,861 Locum[532]: Connection with distnoted server was invalidated
13.12.12 21:16:17,056 Locum[537]: Connection with distnoted server was invalidated
13.12.12 21:16:21,670 mdworker[540]: Unable to talk to lsboxd
13.12.12 21:16:21,674 mdworker[541]: Unable to talk to lsboxd
13.12.12 21:16:21,780 sandboxd[542]: ([540]) mdworker(540) deny mach-lookup com.apple.ls.boxd
13.12.12 21:16:21,791 sandboxd[542]: ([541]) mdworker(541) deny mach-lookup com.apple.ls.boxd
13.12.12 21:16:21,000 kernel[0]: Sandbox: sandboxd(542) deny mach-lookup com.apple.coresymbolicationd
13.12.12 21:16:22,320 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[518]) Could not terminate job: 3: No such process
13.12.12 21:16:22,320 com.apple.launchd[1]: (com.apple.qtkittrustedmoviesservice[518]) Using fallback option to terminate job...
13.12.12 21:16:41,764 Locum[552]: Connection with distnoted server was invalidated
13.12.12 21:17:51,928 Locum[560]: Connection with distnoted server was invalidated
13.12.12 21:18:36,520 Locum[566]: Connection with distnoted server was invalidated
13.12.12 21:18:55,551 Locum[571]: Connection with distnoted server was invalidated
13.12.12 21:19:10,629 Locum[576]: Connection with distnoted server was invalidated
13.12.12 21:20:18,335 com.apple.ShareKitHelper[236]: --warning: [ShareKit-XPC] Received XPC_ERROR_CONNECTION_INVALID
13.12.12 21:20:18,335 com.apple.ShareKitHelper[236]: --warning: [ShareKit-XPC] connectionWithClientInterrupted
13.12.12 21:20:18,336 com.apple.ShareKitHelper[236]: --warning: [ShareKit] Cancel UI for running services with Client PID: 499
13.12.12 21:20:39,743 mdworker[586]: Unable to talk to lsboxd
13.12.12 21:20:39,747 mdworker[587]: Unable to talk to lsboxd
13.12.12 21:20:39,856 sandboxd[588]: ([586]) mdworker(586) deny mach-lookup com.apple.ls.boxd
13.12.12 21:20:39,866 sandboxd[588]: ([587]) mdworker(587) deny mach-lookup com.apple.ls.boxd
13.12.12 21:20:39,000 kernel[0]: Sandbox: sandboxd(588) deny mach-lookup com.apple.coresymbolicationd
This is the time span were it closed last time.. no other programs were in use except maybe iPhoto.
I hope someone can help!!
Thanks in advance !!!!

Please read this whole message before doing anything. This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it. Step 1 The purpose of this step is to determine whether the problem is localized to your user account. Enable guest logins* and log in as Guest. For instructions, launch the System Preferences application, select Help from the menu bar, and enter “Set up guest users” (without the quotes) in the search box. Don't use the Safari-only “Guest User” login created by “Find My Mac.” While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin. Test while logged in as Guest. Same problem? After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it. *Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing. Step 2 The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login. Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you click Log in.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
*Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode.
Test while in safe mode. Same problem?
After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of steps 1 and 2.

Macbook shuts down without charger plugged in, does need a new battery or is it something else? thx

My macbook works with the charger plugged in but even when it shows it charged without the charger it shuts down. Does it need a new battery or is it something else. How do i check battery life?

It probably needs a new battery. Check your battery info by clicking the Apple menu and select about this Mac, then either click more info or system report depending on which version of OS X you're running.

KT3 2400XP just shuts down without any reason

I am desperate.
My system just shuts down as soon as I try to load something in memory.
It’s a KT7333 ultra 2. The latest bios version an one 512 Mb DDR333.
First I use memt86 to test the mem. It ran 3 times without any errors. So the
mem is ok I presume.
I set the FSB to 133 and the bios reported a 2400 cpu.
Then I boot a Win98 boot disk en just when the ( dos) startup menu is
displayed, the pc shuts down.
This is not random. It happened as well with other settings. Only the
default values “last longer” I mean after a while they cause a shutdown as well..
But when I set the FSB on 133, the pc shuts down.
I have an arctic cooling Copper Silent cooler. It runs at very low RPM's so
I get the alarm of "cooler not working". But I continue, like the website
from arctic-cooling describes. I disable the CPU fan RPM in the bios and
everything works until the system shut's down. When I look in PC health,
the temp never goes above 58 °Celsius, so the cooling should be ok.
After the pc has made a shutdown, I try to restart with the on switch, but
then there is an error, a signal sounds and when I look at the "D-bracket"
It indicates an error. The memory detection test, "Testing onboard memory
size, the D-led will hang if the memory module is damaged or not installed
properly". The led effectively hangs. But when I cut the power on the power
supply, and then enable it again, press the on switch, the entire system
boots without a problem. Just until the shutdown.
Is there another specific memory setting that I can alter?
When I set the BIOS to "high performance setup" the disk doesn’t even have
time to read, the system shuts down earlier. This off course also point into
a failsafe from the cooling.
Please help.

Hi,
It looks to me as your CPU cooler isn't mounted properly....
Take it off, clean everything, regrease and put it on the right way....

A665-s6050 will either go to sleep or shut down without any notice

I am at a lost and, of course, my warranty expired in July. Last week my laptop would just literally shut down by itself. Then when restarting it would just shut down again. The system then starting going straight through to see if it could fix why it didn't complete startup. After a few tries to start windows normally, I decided to try this option. Could not find anything. Then it started going straight to this page even if I selected start windows normally. So, ANYWAY, yesterday I decided to use the Toshiba Recovery Tool and it set everything back just like out of the box. For around 6 hours it was working fine no problems.
Today, it started again. It will either shut down completely but if I'm lucky enough to catch it as it is shutting down and I hit the power button it will come back as if it is coming out of 'sleep' mode.
I've haven't loaded anything except office 2010. I've changed my power settings to never shut down. Nothing in Event Log. Toshiba performance monitor do not indicate that it is overheating. Whether I am in Battery or power.Same thing. Just writing this it has gone to sleep twice. Sometimes it stays on for a while.. Other times..after onlly a few minutes. After it goes again I'm submitting.
PLEASE any ideas will help before I take it to the repair center.

Funny... yesterday my laptop worked fine just on battery power up until i needed to recharge it. As soon as I plugged in my power adapter it shut down. I left it shut down to let the battery charge up. Started thinking that it was my power adapter. This morning I turned it on just on battery and it turned up got the starting windows screen and then black. Turned it on again and got to log in. A few minutes later, black again. So today I'm, trying the battery. I took it out and running on straight power.
All other tests, memory, heat, cpu, and disk drive came out good. A friend of mine who worked at Toshiba call center said that they have had several issues that are similar that are the result of overheating from the battery pack or the power adapter itself. Still not convinced but will try anything before taking it in to repair.

Mac pro keeps shutting down without warning

I have a 15 inch Macpro running Mac OS X Lion, version 10.7.3. It keeps shutting down without any warning. The screen just goes black and I have to press and hold the power button for a while till a hear a sound to turn the system off. This is happening like, more than 5 times a DAY. Please help, any suggestions are welcome.

Dose this issue happen when the computer is plugged in? or only when it's unplugged from power?
Have you checked for software updates? if so, have you installed all the updates? (apple menu, software update, install updates, reboot, repeate untill there are no more updates)
If the issue is happening while power is plugged in, have you tried a SMC Reset and NVRAM Reset?
Is there any thing externaly connected to the computer besides power? if so, haveyou tried removing those items; to see if the issue only happens while those devices are connected?
Do you know if yoru MacBook Pro has a NVIDIA GeForce 8600M GT? (apple menu, about this mac)
Do you have any kind of keyboard cover? if so, have you tried removing the keyboard cover, dose the issue still happen?
You could also try running an Apple Hardware Test. If it give you any error codes; I would suggest writing down the exact error message it displays.
Also it might be a good idea to set the graphic card to run on the high end card; and see if the issue still happens. (apple menu, system prefrences, energy saver, At the top there should be a check box along the lines of use best graphic performance at all time, check this box)

PowerBook G4 shuts down without warning even when battery is over 60%

My powerbook has started to shut down without any warning - even if the battery is over 60% charged. The battery is the second (being sent free by apple under the replacement programme). I cannot restart until I have inserted the power cable.
I have tried to reset the PMU - but, following the instructions from apple support ('after shut down simultaneously press Shift - ctrl - option - power, wait 5 secs then press power button') does not work - PMU does not seem to reset. Apparently, when the PMU has been reset, the time and date change and need reseting - but this does not happen - and mine still shows the current date time after attempting a PMU reset.
so - still the Powerbook still shuts down working on a nearly full battery. Battery info seems ok.
I think this is a software problem - any ideas?

Hi, Pieterrr, and welcome to Apple Discussions. No, my post above is absolutely not an official (or unofficial) statement from Apple. These are user-to-user forums. I'm just another Powerbook user like yourself; I have no connection with Apple. Apple employees very rarely post in these forums, and Apple policies are never announced here.
What I wrote is a personal view and recommendation based on reading all the posts in the 15" Aluminum Powerbook forums for a while now. I've posted very similar comments many times before, and some (not all) owners of prematurely-old replacement batteries have succeeded in persuading Apple to replace them again after I suggested trying to do so.

Macbook Shuts downs without any warning.

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