Mac shuts down without reason - mid use

I have had my G4 coming up for 4 years. I have noticed in past week that it shuts down - (showing 'power save' on screen) mid use. Is this possibly the internal battery needing replacement - or does it sound like some other problem? (It does not happen in any particular programme - although I notice it when using outlook express for mac - as this is what I am on alot of the time). I have checked all power/other cables/connectors - and all seems Ok there.

Hello! Have you checked the power settings in the
control/pref panels to make sure they're not set to
sleep. Tom
Hi Tom,
I have checked the 'energy saver' in prefs (is this where you meant?)... I have both OSX & classis both set to 'switch off after in-active use' to NEVER. I am scratching my head about this one as this is the first time this has happened - and I rarely change my prefs settings.
I read the article on re-setting the PMU, however I do not like to mess with the inside of my mac.
If the problem gets worse or persists I will take it to my mac man.
But if cost can be avoided and there is a simple troubleshooting route- would like to try that first!
Thanks for your interest/help.
susan

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Imac unexpectedly shut down without reason

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Glad tey fund the solution for you, let us kno how a new install works.

I just got my shipment and My Ipad mini is just shut down without reasons during upgrading. I'm doing restore it. Does it matter for the future use?

I just got my shipment and My Ipad mini is just shut down without any reason during upgrading. I'm doing restore it. Does it matter for the future use?
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PolishAngel756 wrote:
Some friends have told me that their phone can last up to 2 days without charging??
If they are getting 2 days without charging, it's unlikely they use their device very much.
A full day is pretty good....and if I'm careful, I can easily get a full day of usage.
For me, normal is charging the iPhone mid afternoon at work, but I use it a lot.
My typical usage is 35 mins of listening to podcasts, checking email, checking my RSS feed, and checking a few apps while I ride my bike when I first get up. Then listening to several podcasts at work.
I typically stream music while working out during my lunch hour and use the Men's Health Fitness app to track my progress.
By about 2pm I'm ready to charge the device as it's getting low (somewhere between 20% and 50%).
I leave bluetooth, Wi-FI, and location services turned on all the time.
Personally, I just do not see the point in going into settings to turn on the feature when I need it... just too much hassle. All of my listening to podcasts and music is via Bluetooth.
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Qosmio X870 shutting down without reason - low perfs

Hello everyone,
I have recently bought a Qosmio X870 116 and I am extremely disappointed. It is supposed to be a gaming computer but I can barely run a single game without the PC crashes. I tried to run recent games such as Diablo 3 and Guild Wars 2. During the downloading of the GW2 launcher, the PC crashed after a while, shutting down without any reason.
I eventually managed to install the game on my laptop anyway but I still encounter some issues since as I play, after not more than two minutes, the game slows down, the frame per second rate drops dramatically to 2 fps and the laptop crashes again.
I think there is a problem with the graphic card or the fan because eveytime I try to launch a game, the fan starts to run very fast and noisely.
I thought it also may be a problem with the Nvidia technology because of their Optimus service on their recent graphic cards, therefore I tried to "prioritize" the use of my NVIDIA GeForce GTX 670M instead of the chipset Intel HD Family 4000 used in the laptop, by right-clicking on the GW2 icon and opening the NVIDIA panel to select the "Nvidia High performances" option.
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Try this with your video card and power settings:
Go to NVIDIA Control Panel (right click on desktop, 8th selection down), select/click
First tab {Adjust image settings with preview}:
Select: {Use my preference emphasizing: Performance}
**select "performance"**
Hit {Apply}
Second tab {Manage 3D settings}
**It gets technical but make sure it is exactly as I say it or it will not work. **
Go to Subtab 1{Global Settings}:
{Preferred graphics processor:}
**SELECT "High-performance NVIDIA processor** *(see Note 1 at end)*
Settings: *Again,it has to be exact; first phrase in { } is "Features" the first column, second phrase in { } is the "Settings", the second column:
**Everything is on a drop-down menu if you click on the {Feature} name and mouse over the {Setting} option**
{Ambient Occlusion} {Performance}
{Anisotropic filtering} {Off}
{Antialiasing-FXAA} {On}
{Antialiasing-Gamma correction} {On}
{Antialiasing-Mode} {Off}
*Grayed out* {Antiliasing-Setting} {None}
*Grayed out* {Antiliasing-Transparency} {Off}
{CUDA-GPUs} {All}
{Maximum pre-rendered frames} {4}
{Multi-dislpay/mixed-GPU acceleration} {Single display performance mode} (see Note 2)
{Power management mode] [Prefer maximum performance] **a no brainer but its default is not this setting**
{Texture filtering-Anisotropic sample opt...} {On}
{Texture filtering-Negative LOD bias} {Allow}
{Texture filter-Quality} {Quality}
{Texture filtering-Trilinear optimization} {On}
{Threaded optimization} {Auto}
{Triple buffering} {Off}
{Vertical sync} {Off}
*Hit "Apply" before moving to the third tab {Set PhysX Configuration}
Third tab {Set PhysX Configuration}:
*ONLY SETTING IN TAB*
Select "GeForce GTX 670M"
Hit {Apply}
**NOT "CPU" and, NEVER "Auto-select (recommended)"** (see Note 1, again)
Go to Power Settings in your Control Panel:
Choose a Power Plan Option (Search "power" in search bar, choose the "Power plan", second selection under "Power Options" page.
*GO WITH THE HIGH PERFORMANCE OPTION, VERY CRITICAL!!!!* By default it is on "balance" (I believe)
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Note 2: Select other option if setup is different.
~Experience:Electronics Technician, Gaming (Blizzard, Steam, and EA Games), Trial and Error

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Try resetting your preferences as described in the FAQ.
http://forums.adobe.com/thread/375776?tstart=0
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MBA 2013 shut down without reason after upgrade MAVERICKS

Hi there ,
I have a new MBA 2013 , till the upgrade to Mavericks (for free) no worries , but today after the upgrade he shutted down unexpectedly twice !!! What's happening here ? Am I the only one having this kind of issue?
HELP ME
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nana4design,
some 15-inch Mid 2010 MacBook Pros are known to have a defective NVIDIA GPU. Since you’re getting GPU panics, yours might be one with the defect. Apple had a gratis servicing program for this model’s defect that lasted for three years from the date of the MacBook Pro’s purchase; they still offer the servicing program, but it is no longer guaranteed to be gratis. I’d recommend making an appointment at your nearest Apple store, to have them run their Video System Test on your MacBook Pro to confirm whether or not its NVIDIA GPU has this defect.

Mac shuts down without warning after upgrade

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See:
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See http://kb.mozillazine.org/Java#Multiple_Java_Console_extensions
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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.
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The next time the problem happens, 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.

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

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Can somebody give me some advice on this?
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This problem has only started since I moved into a new home.
It is plugged into a surge protector.
I am running the latest update of OS10.6
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I have used this configuration for years without a problem.
The problem does not occur when I am using safari or itunes or mail.
The steps I have taken so far are:
reset the PRAM
reset the SMC
tried different outlets in the house in case of a wiring problem in the house
removed and reseated both 1GB RAM chips.
tried different configuartions of my external hard drives
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