TS1388 iMac shuts down while on line

iMac shuts down (crashes) while using internet only - this started after installing Mavericks X ... I have reinstalled operating system twice and it still happens

Here you go, Linc
Sun Nov 9 07:13:13 2014
*** Panic Report ***
panic(cpu 2 caller 0xffffff802c01e80a): Kernel trap at 0xffffff802c0059ad, type 13=general protection, registers:
CR0: 0x0000000080010033, CR2: 0x00000001025a3000, CR3: 0x000000053130b056, CR4: 0x00000000000626e0
RAX: 0xffffff804ce9d280, RBX: 0x00000000073ba280, RCX: 0xffffff804ce9d298, RDX: 0xffffff8050d9efc0
RSP: 0xffffff8279d1bc60, RBP: 0xffffff8279d1bd40, RSI: 0x000000000edc0000, RDI: 0x0000000000000029
R8: 0x0000000000000069, R9: 0x0000000000000000, R10: 0x000000000edc0000, R11: 0x000000000edd8000
R12: 0xffffff804ce9d290, R13: 0xffefff804ce9d280, R14: 0xffffff8045ae3000, R15: 0xffffff806ae08750
RFL: 0x0000000000010206, RIP: 0xffffff802c0059ad, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x00000001025a3000, Error code: 0x0000000000000000, Fault CPU: 0x2
Backtrace (CPU 2), Frame : Return Address
0xffffff8279cd5e10 : 0xffffff802bf3a811
0xffffff8279cd5e90 : 0xffffff802c01e80a
0xffffff8279cd6050 : 0xffffff802c03a443
0xffffff8279cd6070 : 0xffffff802c0059ad
0xffffff8279d1bd40 : 0xffffff802c0065e5
0xffffff8279d1bda0 : 0xffffff802bfb6b4a
0xffffff8279d1beb0 : 0xffffff802bfacd2c
0xffffff8279d1bee0 : 0xffffff802bf32df7
0xffffff8279d1bf10 : 0xffffff802c009f6b
0xffffff8279d1bfb0 : 0xffffff802c03aa18
BSD process name corresponding to current thread: Google Chrome He
Mac OS version:
14A386b
Kernel version:
Darwin Kernel Version 14.0.0: Sat Sep 27 03:58:47 PDT 2014; root:xnu-2782.1.97~11/RELEASE_X86_64
Kernel UUID: D1F807E1-A660-3126-96DF-6A9E65444DA3
Kernel slide: 0x000000002bc00000
Kernel text base: 0xffffff802be00000
__HIB text base: 0xffffff802bd00000
System model name: iMac12,1 (Mac-942B5BF58194151B)
System uptime in nanoseconds: 3952498468911
last loaded kext at 339952139872: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7faeb4a000, size 69632)
last unloaded kext at 409372023064: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7faeb4a000, size 61440)
loaded kexts:
com.apple.driver.AudioAUUC 1.70
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AGPM 100.14.32
com.apple.driver.AppleBluetoothMultitouch 85.3
com.apple.iokit.IOBluetoothSerialManager 4.3.0f10
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleOSXWatchdog 1
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.driver.AppleUpstreamUserClient 3.6.1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleHDA 266.5
com.apple.kext.AMDFramebuffer 1.2.8
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleHV 1
com.apple.driver.AppleMikeyDriver 266.5
com.apple.driver.AppleBacklight 170.4.12
com.apple.driver.AppleThunderboltIP 2.0.2
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.0f10
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.AMDRadeonX3000 1.2.8
com.apple.kext.AMD6000Controller 1.2.8
com.apple.driver.AppleLPC 1.7.3
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AppleMCCSControl 1.2.10
com.apple.driver.AppleIntelHD3000Graphics 10.0.0
com.apple.driver.AppleIntelSNBGraphicsFB 10.0.0
com.apple.iokit.SCSITaskUserClient 3.7.0
com.apple.driver.AppleUSBCardReader 3.5.0
com.apple.driver.AppleIRController 327.5
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.6.5
com.apple.driver.AppleUSBHub 705.4.1
com.apple.iokit.AppleBCM5701Ethernet 10.1.2b3
com.apple.driver.AirPort.Atheros40 700.74.5
com.apple.driver.AppleFWOHCI 5.5.2
com.apple.driver.AppleAHCIPort 3.0.7
com.apple.driver.AppleUSBEHCI 705.4.14
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 3.1
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 3.1
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0
com.apple.nke.applicationfirewall 161
com.apple.security.quarantine 3
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 218.0.0
com.apple.driver.AppleBluetoothHIDKeyboard 175.5
com.apple.driver.AppleHIDKeyboard 175.5
com.apple.driver.IOBluetoothHIDDriver 4.3.0f10
com.apple.driver.AppleMultitouchDriver 260.30
com.apple.iokit.IOSerialFamily 11
com.apple.kext.triggers 1.0
com.apple.iokit.IOSurface 97
com.apple.driver.DspFuncLib 266.5
com.apple.kext.OSvKernDSPLib 1.15
com.apple.iokit.IOAudioFamily 200.6
com.apple.vecLib.kext 1.2.0
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.AppleBacklightExpert 1.1.0
com.apple.driver.AppleThunderboltEDMSink 4.0.2
com.apple.iokit.IOUSBUserClient 705.4.0
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.0f10
com.apple.iokit.IOBluetoothFamily 4.3.0f10
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.AppleSMC 3.1.9
com.apple.iokit.IOAcceleratorFamily2 156.4
com.apple.kext.AMDSupport 1.2.8
com.apple.AppleGraphicsDeviceControl 3.7.19
com.apple.driver.IOPlatformPluginFamily 5.8.0d49
com.apple.driver.AppleHDAController 266.5
com.apple.iokit.IOHDAFamily 266.5
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.AppleSMBusController 1.0.13d1
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.0
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOAHCISerialATAPI 2.6.1
com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.0
com.apple.iokit.IOUSBMassStorageClass 3.7.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.0
com.apple.iokit.IOUSBHIDDriver 705.4.0
com.apple.driver.AppleUSBMergeNub 705.4.0
com.apple.driver.AppleUSBComposite 705.4.9
com.apple.driver.AppleThunderboltDPInAdapter 4.0.6
com.apple.driver.AppleThunderboltDPOutAdapter 4.0.6
com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6
com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2
com.apple.driver.AppleThunderboltNHI 3.1.7
com.apple.iokit.IOThunderboltFamily 4.2.1
com.apple.iokit.IOEthernetAVBController 1.0.3b3
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.iokit.IO80211Family 700.52
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOFireWireFamily 4.5.6
com.apple.iokit.IOAHCIFamily 2.7.0
com.apple.iokit.IOUSBFamily 705.4.14
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleKeyStore 2
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.DiskImages 389.1
com.apple.iokit.IOStorageFamily 2.0
com.apple.iokit.IOReportFamily 31
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 3.1
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.Libm 1
com.apple.kec.pthread 1
System Profile:
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P
Bluetooth: Version 4.3.0f10 14890, 3 services, 27 devices, 1 incoming serial ports
Thunderbolt Bus: iMac, Apple Inc., 25.1
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3230554638424353302D444A2D4620
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3230554638424353302D444A2D4620
Memory Module: BANK 0/DIMM1, 8 GB, DDR3, 1333 MHz, 0x859B, 0x435438473353313333394D2E4D3136464444
Memory Module: BANK 1/DIMM1, 8 GB, DDR3, 1333 MHz, 0x859B, 0x435438473353313333394D2E4D3136464444
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Neat ADF Scanner
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Hub
USB Device: GoFlex Desk
USB Device: IR Receiver
USB Device: Internal Memory Card Reader
Serial ATA Device: ST3500418AS, 500.11 GB
Serial ATA Device: OPTIARC DVD RW AD-5690H
Model: iMac12,1, BootROM IM121.0047.B1E, 4 processors, Intel Core i5, 2.5 GHz, 20 GB, SMC 1.71f22
Network Service: Wi-Fi, AirPort, en1
Graphics: AMD Radeon HD 6750M, AMD Radeon HD 6750M, PCIe, 512 MB

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It shut down yesterday after I got out of shower, and it shut down today after finishing my dinner. I've been trying to use process of elimination to figure what's the root of problem, but it is not as easy as it seems.
What I have known so far is that, the iMac never shuts down when I'm using it, it always happens when I am not around, and there is no one present while I was away so it has to be shutting down by itself. My iMac wasn't overheating either since it's idling while I was away.
Although the iMac did shut down while I was using Boot Camp before. However, after I upgraded to Leopard, my iMac, so far, has not shut down itself randomly while using Boot Camp.
P.S. I leave my iMac on all the time, and I was gone for Thanksgiving for 4 days. Surprisingly, the iMac was still on when I got back from the Thanksgiving break.
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1st. It's a faulty iMac that I bought.
2nd. The way I have the iMac's power cord connects to the outlet using a 5-Outlet powerstrip, which does not produce enough voltage for iMac.
There are probably more than just these 2 possibilities, I have not yet tried connecting the power cord directly to the outlet since the power cord is not long enough to reach the outlet. I don't think it's a faulty iMac either because the possibility of getting a faulty iMac is pretty low.
This problem is starting getting on my nerve, and I am not sure if I am the only one out there experiencing this sort of problem.
I am sure there are experts out there have solution for this particular problem.

I have had this issue happen twice that I know of in the last month or so.
It has happened each time while burning a DVD in the iMacs internal DVD drive. I think from memory they were both DVD-ROM-UDF discs and both stopped in the middle of the burn.
I can't remember how long the computer was on the first time it happened but this time it was only on for a few minutes.
The only thing I could think it might have to do with is either the USB hub that I'm using or one of the external drives that were attached at the time.
They were being accessed at the time it shutdown so maybe there was a power management issue with dealing with the peripheral devices.
I have experienced inconsistent performance with peripheral ports in Apple products for at least the last 5 years. I have encountered problems with only one firewire port functioning properly on many different machines - i.e there are two ports both work individually, try getting them to work together and one device disappears.
Inconsistent speeds with USB ports acting something like a USB-1 speed or even slower, and non-powered (or... not powered enough) USB ports on the higher end laptops - i.e; PowerBook G4 15inch could not mount an external USB hardrive on any port (without the powerlead) while the lesser iBook 14inch could on either USB port.
I don't know if these issues were specifically designed to be there (I couldn't imagine why) but they do exist and frustrate me daily.
I'd try disconnecting everything including your keyboard and mouse, if you have a spare try those and see what happens.
Once your machine is up and running (if you get that far) try plugging one peripheral in at a time and leave it like that for an hour - see what happens.
If that doesn't work start unplugging your household devices that you seem to have many of. See if this helps - i think it would be better to replace a $60 phone then a $2,000 computer or an old microwave for a newer safer one.
It might be worth going over to you neighbours house to see if the problem persists there, you might have some kind of problem on your electricity connection.
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IMac shuts down on 1/3 of boot sequence

Hello,
My 20 inch 2007 iMac suddenly started shutting down on 1/3 of boot sequence. This happened after the mac just shut down while i was working on it, since this happened the mac will not boot. The Apple logo appears, the loading bar appears, it gets to 1/3 off the bar, then it disappears, and the mac shuts down. I already used the disk utility to check the disk, there seems to be no problem. Also, i already re-installed MacOS, this did not have any effect as well.
Does anyone know how to fix this problem?
Mac info:
iMac 7,1 20 inch
Processor: Intel core 2 duo, 2.4 ghz
4GB of Ram.

Reinstalling OS X Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Reinstalling OS X Without Erasing the Drive
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility and press the Continue button. After Disk Utility loads select the Macintosh HD entry from the the left side list. Click on the First Aid tab, then click on the Repair Disk button. If Disk Utility reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit Disk Utility and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Also see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

Imac shuts down, randomly, all the time

So my imac shuts down randomly all the time, after it turns itself off, u need to unplug it for ages, then it will restart (way longer than it should to reset smc). Even in target mode,
Even stranger is it logs a console message stating, system must shutdown now, shutting down....
I thought it must certainly be hardware issue but what? I have checked all temps, reset firmware, etc etc.....
The logic board has been replaced, so it can only be the psu?? any ideas?

I've experiencing the same problem.
If there is a power failure (or the power line gets disconect) I have to unplug everything from the back of the computer and wait for hours till I can turn it back on.
Recently it started to turn itself off..... and then I have to wait for several hours till I can get it to work again..... any tips on how to solve this?

TS1388 iMac shuts down while on line

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