The connection of my MAC keeps shutting down!

I have a problem with my connection. It keeps shuting down almost every 15 minutes (technically not connected) but it's still somehow connected. I've checked for the diagnosis and it appeared that ISP, Internet, and Server are failed. If I turn off-then-on the wi-fi of it returns. AND SO ON..
Can I deal with such a problem from here (If yes how?) OR should i take the device to the company ?
please help,
Thanks

Please test after taking each of the following steps that you haven't already tried. Stop when the problem is resolved. Back up all data before making any changes.
Step 1
Take the applicable steps in this support article. The Wireless Diagnostics program generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 2
Disconnect all USB 3 devices. If you don't know which are USB 3, disconnect all USB devices except keyboard and mouse.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. If you find that Wi-Fi works better with Bluetooth disabled, you should use the 5 GHz Wi-Fi band. Your router may not support it; in that case, you need a new router.
Step 4
Open the Network pane in System Preferences and make a note of your settings in the Wi-Fi service. It may be helpful to take screenshots of the various tabs in the preference pane. If the preference pane is locked, unlock it by clicking the padlock icon and entering your administrator password. Delete Wi-Fi from the service list on the left by selecting it and clicking the minus-sign button at the bottom. Then recreate the service by clicking the plus-sign button and following the prompts.
Step 5
Reset the System Management Controller.
Step 6
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.

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Mac keeps shutting down

Hi,
this is a bit of an awkward problem – not sure if someone can help me out.
I work on a MacPro (early 2008) but have updated it with two hard drives (SSD) and 24 GB RAM. So it works pretty well.
The computer is connected to a battery back up because we have lot's of brown outs in my area. My computer battery got fried 2 years ago (after a black out) and I think I have a third party battery now in the machine.
Everything has been working fine these last two years but now my Mac keeps shutting down and tries to start up again without success. I tried to find the problem and tested a new external battery back up, which wasn't the problem. I check our electrical outlets. They seem to be OK, though the electrician found out that they weren't wired properly – so he fixed it. And it works fine for a week. During that week I unplugged the computer from the outlet so that the internal battery can drain. When I stopped doing that and left the cable in the machine over night, the problems came back and the Mac kept shutting down. So my guess was, that there is something wrong with the internal battery of the computer. The strange thing is that the Mac works fine when I plug it with an extension cord in an outlet downstairs. This is confusion since there might be really an electrical issue in our home (?)
Then two days ago I realized that my memory RAM shows up only 12 GB instead of 24 GB. So I took the RAM out, dusted everything and put the RAM back in. The Mac was back at 24 GB.
So far the Mac hasn't tried to shut down on it's own. The cable is plugged in in my office outlet; not the ones which worked fine downstairs but I unplug it over night; just in case. As you can see, there is a lot of confusion in finding the problem. Perhaps the shut downs were related to the RAM? I'm just concerned that the problems come back.
Has anyone a clue what the problem is/was. Has anyone experienced something like this before?
Thanks for you input.

I assume that you realize there are cheaper and now better FBDIMMs should you need to narrow down and find any that are offending?
Often heat and dust, and FBDIMMs run hot, age, go bad over course of time. New ones run cooler, that helps.
That you have now probably a 900W or higher, 1500VA UPS, and that you should not have to turn off, leave it on, shutdown or leave the Mac running, up to you.
Resetting the SMC and NVRAM probably done more than enough. USB devices are also able to cause erratic behavior. Been there and done that.
We also have a fair share of power oddities and UPS is a must - all my TVs and such have one, any electronics and floor lamps.
But you also want your modem, router, and important equipment on UPS too, and I found my old APC would interfere with modems and routers, my new-ish Cyberpower do not and work fine so I feel more protected (having had a modem problem is no fun, it was semi functional, semi not (illiterate) if you will (now have spare modem and router too). If you don't filter the RJ45 out of the modem, there can even be too much for the router or the RJ45 ports is what APC told me in a conversation years ago.
3,1 has been more prone to shutdown issues. So yes there are - some early versions of 10.8 for some, for others it was that they upgraded from 10.5 on and had never made a clean break esp. when Lion dropped support for older Rosetta dependent code.

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Hi,
All of a sudden My mac keeps shutting down, I have installed nothing recently no changes nothing for months
and all of a sudden it keeps shutting down.
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CPUs running at 60 to 62 degrees
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I believe -122 is a power issue...
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & can cause strange problems...
See which one your G5 has...
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/
Have you blown the dust out lately? especially the Power Supply?

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These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Step 1
For this step, the title of the Console window should be All Messages. If it isn't, select
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from the log list on the left. If you don't see that list, select
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from the menu bar at the top of the screen.
In the top right corner of the Console window, there's a search box labeled Filter. Initially the words "String Matching" are shown in that box. Enter "BOOT_TIME" (without the quotes.)
Each message in the log begins with the date and time when it was entered. Note the timestamps of the BOOT_TIME log messages, which refer to the times when the system was started. Now clear the search box and scroll back in the log to the last boot time when you had the problem. Select the messages logged before the boot, during the time something abnormal was happening. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
For example, if the system was unresponsive or was failing to shut down for three minutes before you forced a restart, post the messages timestamped within three minutes before the boot time, not after. Please include the BOOT_TIME message at the end of the log extract—not at the beginning.
If there are long runs of repeated messages, please post only one example of each. Don’t post many repetitions of the same message.
☞ When posting a log extract, be selective. A few dozen lines are almost always more than enough.
☞ Some private information, such as your name, may appear in the log. Anonymize before posting.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
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I know the report is long, maybe several hundred lines. Please post all of it anyway.
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Hello,
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I have reviewed all the topics here and nothing quite matches my problem.
When I put my computer to sleep, after about 30 minutes, it shuts down.
I have vacuumed the vents.
I checked Console for warnings (there are none).
I reset the SMU.
I reset the PRAM.
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ivanguy35 wrote:
I have reviewed all the topics here and nothing quite matches my problem.
When I put my computer to sleep, after about 30 minutes, it shuts down.
I have vacuumed the vents.
I checked Console for warnings (there are none).
I reset the SMU.
I reset the PRAM.
It is out of its warranty with Apple Care ... is my computer dying??
My 3.5 year old 20” G5 iMac recently started doing the exact same thing! It does not seem to be heat related, and there are no warnings in the console either, and it was not part of the ones identified with possible power supply issues.
I’ve checked all of the preferences and settings, ran Disk Warrior and Disk Utilities, checked file permissions (all were OK). Mine only seems to power down after it goes to sleep (but not every time), never in the middle of doing anything. So far, I’ve only noticed it when some of my external fire wire drives are powered up, but that could be a coincidence.
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Here’s my thread:
http://discussions.apple.com/thread.jspa?threadID=1867388&tstart=0

My Mac keeps shutting down.

Hi there,
Can anyone tell me why my iMac G5 (not intel) seems to suddenly and randomly shut itself down and reboot. I suspected it might be a CPU temperature issue but It does this even when no programmes are running. It did this about 6 months ago but then seemed to work fine again.
Does anyone have any suggestions?
Thanks,
Julian, UK

Hi Julian,
Boot off your Install Disk while holding down the *d key*, (not c key), then run the extended Apple Hardware Test.
Then get Applejack...
http://www.versiontracker.com/dyn/moreinfo/macosx/19596
After installing, reboot holding down CMD+s, then when the DOS like prompt shows, type in...
applejack AUTO
Then let it do all 5 of it's things.
At least it'll eliminate some questions if it doesn't fix it.
The 5 things it does are...
Correct any Disk problems.
Repair Permissions.
Clear out Cache Files.
Repair/check several plist files.
Dump the VM files for a fresh start.
First reboot will be slower, sometimes 2 or 3 restarts will be required for full benefit... my guess is files relying upon other files relying upon other files!
Disconnect the USB cable from any UPS so the system doesn't shut down in the middle of the process.

My mac keeps shutting down without warning

Can anyone help. My imac will suddenly turn itself off, this happens when I am not online and I can start it again immediately.

What model iMac do you have? G3, G4, G5, Intel-based? How old is it? What OS are you running, 10.3, 10.4, 10.5, 10.6, etc.
It sounds like your power supply is going bad. Here's a link to an old discussion with a similar sounding problem:
https://discussions.apple.com/message/1938289#1938289
This may or may not be a repair that you can do yoourself, depending on you iMac model. I've never had to do this repair so I can't help you out that way.
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Hello,
Have you blown the dust out lately?
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
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I am working on Mac OS 10.7.2 using Quark 9.I. The program keeps shutting down every time I try to work on a file I created on my MacBook Pro using Quark 7.01. Help!

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I have downloaded photoshop elements 12 on mac. But the program keeps shutting down and i have to restart it the whole time.

I have tried deleting the program and reinstalling it but it is not working. It is really annoying since I use it for my photography business. I can not work in a program that keeps shutting down.

You must always, always use the uninstaller in the PSE 12 folder in applications. Unfortunately, you broke some stuff by moving the program that way, so now I'm afraid you have a bit more work to do. First, download and run this:
Use the CC Cleaner Tool to solve installation problems | CC, CS3-CS6
That will not actually remove anything, but it frees things up so you can go around and manually remove stuff. After running it, you will need to scurry around your hard drive and trash all the bits you can find. Start in your username>library>preferences. To see that library, option click Go menu in the finder and it will appear below the little house for your user account. look especially for files beginning com.adobe.whatever. While you're in that library go to the saved application states folder and delete anything pertaining to PSE.
Next you need to go to the library at the top level of your hard drive>library>application support>adobe and delete all the PSE stuff in there. That library isn't exactly hidden, like the user library, but it's hard to get to. The easiest way is to go to the finder preferences>sidebar and turn on Hard Disks under Show these items in sidebar. Then the next time you open a finder window your hard drive will appear in the list on the left side of the window. Click it and the library you want for this will appear in the top level of results.
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The connection of my MAC keeps shutting down!

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