Just updated on my iMac and now have continual 'You need to restart your computer ...' What can I do?

Just done routine update on my iMac, it asked me to restart and now have continual 'You need to restart your computer ...' What can I do?
on a grey screen I see:
panic (cpu 0 caller 0xffffff800064ba7b): "Unable to find driver for this platform: \"ACPI\".\n"@/SourceCache/xnu/xnu-1699.26.8/iokit/Kernel/I0PlatformExpert.cpp:1 504
Debugger called: <panic>
can't perform kext scan: no kext summary
BSD process name corresponding to current thread: Unknown
Mac OS version:
Not yet set

Same problem on my MacBook Pro and a bunch of more people here:
https://discussions.apple.com/message/18621731#18621731

Similar Messages

I have the "Hanvon 5040 drawing tablet",it was working perfectly with mac till last month.As soon as i plug the USB of my tablet into my macbook pro the computer is blocked and an error apears: "you need to restart your computer..."nothing works.Any help?

I have the "Hanvon 5040 drawing tablet",it was working perfectly with mac till last month.As soon as i plug the USB of my tablet into my macbook pro the computer is blocked and an error apears: "you need to restart your computer..."nothing works.Any help?

Check with the manufacturer for updated drivers for your tablet.

IMac G4 Freezes - Get message - You need to restart your computer.

I just posted this question in the G5 forum, I think. The Mac I am using is a G4 - the round 'lamp base' model' - so I will repost the question here.
My iMac freezes without notice, a dark screen comes over the monitor and the message "you need to restart your computer" appears.
This happens randomly and I have no idea what causes this. I thought perhaps it was just a loose power cord, as the cord does seem quite loose.
However, it happens after the machine has been running for some time. Before I have a chance to save my work, the computer tells me it has to shut down. It's not a consistent thing, so it's hard to know if it's the cord or not.
This also happened half way through watching a DVD. Nothing was touched or moved, so it wouldn't appear that this is being caused by a loose cord.
Can anyone shed some light on this problem? (I'm running Tiger on this machine with 700+ megs of RAM plus am using a Mac keyboard. Airport is installed but not in use.
I ran a Hardware Test on it and everything passed. I also completely reloaded all the software, erased the hard drive and did a complete reinstall, and the problem persists. It really is a nuisance and I have no idea what else to try.

Hi AnnieGrace,
Sorry to hear of your woes. You are suffering from Kernel Panics (link) which could be caused by defective RAM, dodgy USB drivers or a software corruption etc etc.
I would advise disconnecting all external devices (except an Apple mouse and keyboard), removing any 3rd party RAM you've installed and the Airport card if you have one.
The best thing to do then is work though Dr Smoke's Kernel Panic Resolution Guide (link).
Do let us know how you get on. When I suffered them it was down to cheap RAM; other AD users have reported that old keyboards caused their problem.
regards
mrtotes

My Imac says "you need to restart your computer" after logging out and click on sleep. 10.6.8?

My Imac recently gives a message "you need to restart your computer" after logging out and clicking "sleep". After a few seconds, gray screeen will roll down and give that messasge. I disconnected USB cable from my printer. Today, after turning it on, the log in screen showed then after 2 seconds the gray screen rolled down again and prompted "you need to restart the computer". I've read the apple communities about kernel panics but to no success. I have a 10.6.8, 2.7 ghz, 4GB. This is the error that showed which I reported to apple mutiple times already.
Panics Since Last Report:          4
Anonymous UUID:                    522B583E-D9D7-463D-B57E-6849A69E41D9
Wed Jan 22 11:52:33 2014
panic(cpu 0 caller 0xffffff80002d1208): Kernel trap at 0xffffff7f80e2750d, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x00000000000001e0, CR3: 0x0000000000100000, CR4: 0x0000000000040660
RAX: 0x000000000000000a, RBX: 0x00000000000001e0, RCX: 0x0000000001000000, RDX: 0x0000000000000000
RSP: 0xffffff805e413eb0, RBP: 0xffffff805e413f10, RSI: 0x00000000000000dd, RDI: 0xffffff800b3eb7e0
R8: 0x0000000000000003, R9: 0x0000000000000001, R10: 0x0000000000000007, R11: 0x0000000000000051
R12: 0x000000000000000a, R13: 0xffffff804aa59004, R14: 0xffffff800d15f1b4, R15: 0x0000000000000000
RFL: 0x0000000000010202, RIP: 0xffffff7f80e2750d, CS: 0x0000000000000008, SS: 0x0000000000000010
Error code: 0x0000000000000000
Backtrace (CPU 0), Frame : Return Address
0xffffff805e413b50 : 0xffffff8000204d15
0xffffff805e413c50 : 0xffffff80002d1208
0xffffff805e413da0 : 0xffffff80002e3f4a
0xffffff805e413db0 : 0xffffff7f80e2750d
0xffffff805e413f10 : 0xffffff7f80e7f7d3
0xffffff805e413f30 : 0xffffff800053e46d
0xffffff805e413f60 : 0xffffff8000285b66
0xffffff805e413fa0 : 0xffffff80002c8527
      Kernel Extensions in backtrace (with dependencies):
         com.apple.driver.AirPort.Atheros9388(426.35.3)@0xffffff7f80e1c000->0xffffff7f80 f66fff
            dependency: com.apple.iokit.IOPCIFamily(2.6.8)@0xffffff7f80804000
            dependency: com.apple.iokit.IO80211Family(320.1)@0xffffff7f80df7000
            dependency: com.apple.iokit.IONetworkingFamily(1.10)@0xffffff7f80ddd000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
10K549
Kernel version:
Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64
System model name: iMac12,2 (Mac-942B59F58194171B)
System uptime in nanoseconds: 4614091555750
unloaded kexts:
com.apple.driver.AppleUSBUHCI          4.2.5 (addr 0xffffff7f80969000, size 0x65536) - last unloaded 128892379106
loaded kexts:
com.apple.filesystems.afpfs          9.7.1 - last loaded 1016854024083
com.apple.nke.asp_tcp          5.0
com.apple.filesystems.smbfs          1.6.7
com.apple.filesystems.autofs          2.1.0
com.apple.driver.AGPM          100.12.31
com.apple.driver.AppleHWSensor          1.9.3d0
com.apple.driver.AudioAUUC          1.57
com.apple.driver.AppleUpstreamUserClient          3.5.7
com.apple.driver.AppleMikeyHIDDriver          1.2.0
com.apple.driver.AppleMCCSControl          1.0.26
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AppleMikeyDriver          2.0.8f3
com.apple.kext.ATIFramebuffer          6.4.2
com.apple.driver.AppleIntelHDGraphics          6.4.2
com.apple.driver.AudioIPCDriver          1.1.6
com.apple.driver.AppleHDA          2.0.8f3
com.apple.ATIRadeonX3000          6.4.2
com.apple.iokit.AppleBCM5701Ethernet          3.0.8b2
com.apple.driver.AirPort.Atheros9388          426.35.3
com.apple.driver.ACPI_SMC_PlatformPlugin          4.7.0a1
com.apple.driver.AppleLPC          1.5.1
com.apple.driver.AppleBacklight          170.0.48
com.apple.kext.AppleSMCLMU          1.5.2d10
com.apple.driver.AppleIntelSNBGraphicsFB          6.4.2
com.apple.driver.AppleBluetoothMultitouch          54.3
com.apple.driver.AppleUSBCardReader          2.6.1
com.apple.driver.AppleIRController          303.8
com.apple.iokit.SCSITaskUserClient          2.6.9
com.apple.iokit.IOAHCIBlockStorage          1.6.6
com.apple.driver.AppleFWOHCI          4.7.7
com.apple.driver.AppleUSBHub          4.2.5
com.apple.BootCache          31.1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.driver.AppleEFINVRAM          1.4.0
com.apple.driver.AppleAHCIPort          2.2.0
com.apple.driver.AppleUSBEHCI          4.2.6
com.apple.driver.AppleACPIButtons          1.3.6
com.apple.driver.AppleRTC          1.3.1
com.apple.driver.AppleHPET          1.5
com.apple.driver.AppleSMBIOS          1.7
com.apple.driver.AppleACPIEC          1.3.6
com.apple.driver.AppleAPIC          1.4
com.apple.driver.AppleIntelCPUPowerManagementClient          142.6.0
com.apple.security.sandbox          1
com.apple.security.quarantine          0
com.apple.nke.applicationfirewall          2.1.14
com.apple.driver.AppleIntelCPUPowerManagement          142.6.0
com.apple.driver.AppleProfileReadCounterAction          17
com.apple.driver.AppleProfileTimestampAction          10
com.apple.driver.AppleProfileThreadInfoAction          14
com.apple.driver.AppleProfileRegisterStateAction          10
com.apple.driver.AppleProfileKEventAction          10
com.apple.driver.AppleProfileCallstackAction          20
com.apple.iokit.IOSurface          74.2
com.apple.iokit.IOBluetoothSerialManager          2.4.5f3
com.apple.iokit.IOSerialFamily          10.0.3
com.apple.driver.DspFuncLib          2.0.8f3
com.apple.iokit.IOAudioFamily          1.8.3fc2
com.apple.kext.OSvKernDSPLib          1.3
com.apple.driver.AppleSMBusController          1.0.10d0
com.apple.driver.AppleBluetoothHIDKeyboard          141.5
com.apple.driver.AppleHIDKeyboard          141.5
com.apple.iokit.IOFireWireIP          2.0.4
com.apple.iokit.AppleProfileFamily          41
com.apple.driver.AppleHDAController          2.0.8f3
com.apple.iokit.IOHDAFamily          2.0.8f3
com.apple.driver.ApplePolicyControl          3.0.17
com.apple.driver.AppleGraphicsControl          3.0.17
com.apple.iokit.IO80211Family          320.1
com.apple.iokit.IONetworkingFamily          1.10
com.apple.driver.IOPlatformPluginFamily          4.7.0a1
com.apple.driver.AppleSMBusPCI          1.0.10d0
com.apple.driver.AppleBacklightExpert          1.0.2
com.apple.iokit.IONDRVSupport          2.2.1
com.apple.driver.AppleSMC          3.1.0d5
com.apple.driver.AppleThunderboltEDMSink          1.1.3
com.apple.driver.AppleThunderboltEDMSource          1.1.3
com.apple.kext.ATI6000Controller          6.4.2
com.apple.kext.ATISupport          6.4.2
com.apple.iokit.IOGraphicsFamily          2.2.1
com.apple.driver.IOBluetoothHIDDriver          2.4.5f3
com.apple.driver.AppleMultitouchDriver          207.11
com.apple.driver.AppleThunderboltDPOutAdapter          1.5.9
com.apple.driver.AppleThunderboltDPInAdapter          1.5.9
com.apple.driver.AppleThunderboltDPAdapterFamily          1.5.9
com.apple.driver.AppleThunderboltPCIDownAdapter          1.2.1
com.apple.iokit.IOUSBMassStorageClass          2.6.7
com.apple.iokit.IOSCSIBlockCommandsDevice          2.6.9
com.apple.iokit.IOUSBHIDDriver          4.2.5
com.apple.driver.BroadcomUSBBluetoothHCIController          2.4.5f3
com.apple.driver.AppleUSBBluetoothHCIController          2.4.5f3
com.apple.iokit.IOBluetoothFamily          2.4.5f3
com.apple.iokit.IOSCSIMultimediaCommandsDevice          2.6.9
com.apple.iokit.IOBDStorageFamily          1.6
com.apple.iokit.IODVDStorageFamily          1.6
com.apple.iokit.IOCDStorageFamily          1.6.1
com.apple.driver.XsanFilter          402.1
com.apple.iokit.IOAHCISerialATAPI          1.2.6
com.apple.iokit.IOSCSIArchitectureModelFamily          2.6.9
com.apple.driver.AppleThunderboltNHI          1.3.2
com.apple.iokit.IOThunderboltFamily          1.7.4
com.apple.driver.AppleUSBMergeNub          4.2.5
com.apple.driver.AppleUSBComposite          3.9.0
com.apple.iokit.IOFireWireFamily          4.2.7
com.apple.iokit.IOUSBUserClient          4.2.4
com.apple.iokit.IOAHCIFamily          2.0.7
com.apple.iokit.IOUSBFamily          4.2.6
com.apple.driver.AppleEFIRuntime          1.4.0
com.apple.iokit.IOHIDFamily          1.6.6
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.TMSafetyNet          6
com.apple.kext.AppleMatch          1.0.0d1
com.apple.driver.DiskImages          289
com.apple.iokit.IOStorageFamily          1.6.3
com.apple.driver.AppleACPIPlatform          1.3.6
com.apple.iokit.IOPCIFamily          2.6.8
com.apple.iokit.IOACPIFamily          1.3.0
Model: iMac12,2, BootROM IM121.0047.B1F, 4 processors, Intel Core i5, 2.7 GHz, 4 GB, SMC 1.72f1
Graphics: AMD Radeon HD 6770M, AMD Radeon HD 6770M, PCIe, 512 MB
Memory Module: global_name
Bluetooth: Version 2.4.5f3, 2 service, 19 devices, 0 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: ST31000528AS, 931.51 GB
Serial ATA Device: OPTIARC DVD RW AD-5680H
USB Device: FaceTime HD Camera (Built-in), 0x05ac (Apple Inc.), 0x850b, 0xfa200000 / 3
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8215, 0xfa111000 / 6
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 / 4
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfd110000 / 3
What is going on with this error?

It hasn't been acting up since I:
1) Since I unplug my all in one printer with wifi (Hewlett Packard). I barely use the printer and it keeps cleaning out the jets and wasting my **** ink. Plus it'll do a loud self test @ 3:00 in the morning & by this time, I pulled my baseball bat from under the bed and ready to smash some skulls in the office room thinking its a burglar.
But seriously it stop doing it.
This is a late reply but confirmed after 7 months.
Note: I shut down instead of sleep my Imac now because I hardly use it.

I have a MacBook Pro 13.3 OS- MAC OS X LION.Whenever I am staring the computer, it says You need to restart your computer by pressing the power button.I did this number of times and everytime it freezes to the same screen.Solution needed urgently pls.

I have a MacBook Pro 13.3 OS- MAC OS X LION.
Whenever I am staring the computer, it says You need to restart your computer by pressing the power button.
I did this number of times and everytime it freezes to the same screen.Solution needed urgently pls.
Thank you for any help in this regard that comes fast.

The details of the kernel-panic report is as follows-
Interval Since Last Panic Report: 1458653 sec
Panics Since Last Report:          6
Anonymous UUID:                    70BA6A**************************************************
Sun Sep 16 23:00:13 2012
panic(cpu 0 caller 0xffffff80002c4794): Kernel trap at 0xffffff8000290560, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000800028, CR3: 0x000000000a509005, CR4: 0x00000000001606e0
RAX: 0x0000000000000001, RBX: 0x0000000000820000, RCX: 0xffffff801122dc40, RDX: 0x0000000000020501
RSP: 0xffffff80ef3d3da0, RBP: 0xffffff80ef3d3dc0, RSI: 0x000000002b1d78b6, RDI: 0xffffff800342d280
R8: 0xffffff80ef3d3f08, R9: 0xffffff80ef3d3ef8, R10: 0x000000010d901000, R11: 0x0000000000000206
R12: 0xffffff800342d280, R13: 0x0000000000000000, R14: 0xffffff8011cd6500, R15: 0x0000000000800000
RFL: 0x0000000000010206, RIP: 0xffffff8000290560, CS: 0x0000000000000008, SS: 0x0000000000000000
CR2: 0x0000000000800028, Error code: 0x0000000000000000, Faulting CPU: 0x0
Backtrace (CPU 0), Frame : Return Address
0xffffff80ef3d3a50 : 0xffffff8000220792
0xffffff80ef3d3ad0 : 0xffffff80002c4794
0xffffff80ef3d3c80 : 0xffffff80002da55d
0xffffff80ef3d3ca0 : 0xffffff8000290560
0xffffff80ef3d3dc0 : 0xffffff800026c9c3
0xffffff80ef3d3f40 : 0xffffff80002c3fbb
0xffffff80ef3d3fb0 : 0xffffff80002da481
BSD process name corresponding to current thread: fsck_hfs
Mac OS version:
11E2620
Kernel version:
Darwin Kernel Version 11.4.2: Wed May 30 20:13:51 PDT 2012; root:xnu-1699.31.2~1/RELEASE_X86_64
Kernel UUID: 25EC645A-8793-3201-8D0A-23EA280EC755
System model name: MacBookPro9,2 (Mac-6F01561E16C75D06)
System uptime in nanoseconds: 4850001132
last loaded kext at 1796984176: com.apple.driver.BroadcomUSBBluetoothHCIController    4.0.7f2 (addr 0xffffff7f80e16000, size 57344)
loaded kexts:
com.apple.driver.BroadcomUSBBluetoothHCIController    4.0.7f2
com.apple.driver.AppleUSBTCButtons    227.6
com.apple.driver.AppleUSBTCKeyEventDriver    227.6
com.apple.driver.AppleUSBTCKeyboard    227.6
com.apple.driver.AppleIRController    312
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless    1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1
com.apple.BootCache    33
com.apple.iokit.SCSITaskUserClient    3.2.1
com.apple.driver.XsanFilter    404
com.apple.iokit.IOAHCISerialATAPI    2.0.3
com.apple.iokit.IOAHCIBlockStorage    2.0.4
com.apple.driver.AppleFWOHCI    4.8.9
com.apple.driver.AirPort.Brcm4331    560.7.21
com.apple.driver.AppleSDXC    1.2.2
com.apple.driver.AppleUSBHub    5.0.8
com.apple.iokit.AppleBCM5701Ethernet    3.2.4b8
com.apple.driver.AppleEFINVRAM    1.6.1
com.apple.driver.AppleSmartBatteryManager    161.0.0
com.apple.driver.AppleAHCIPort    2.3.0
com.apple.driver.AppleUSBEHCI    5.0.7
com.apple.driver.AppleUSBXHCI    1.0.7
com.apple.driver.AppleACPIButtons    1.5
com.apple.driver.AppleRTC    1.5
com.apple.driver.AppleHPET    1.7
com.apple.driver.AppleSMBIOS    1.9
com.apple.driver.AppleACPIEC    1.5
com.apple.driver.AppleAPIC    1.6
com.apple.driver.AppleIntelCPUPowerManagementClient    195.0.0
com.apple.nke.applicationfirewall    3.2.30
com.apple.security.quarantine    1.3
com.apple.security.TMSafetyNet    8
com.apple.driver.AppleIntelCPUPowerManagement    195.0.0
com.apple.driver.AppleUSBBluetoothHCIController    4.0.7f2
com.apple.iokit.IOBluetoothFamily    4.0.7f2
com.apple.driver.AppleFileSystemDriver    13
com.apple.driver.AppleUSBMultitouch    230.5
com.apple.driver.AppleThunderboltDPInAdapter    1.8.4
com.apple.driver.AppleThunderboltDPAdapterFamily    1.8.4
com.apple.driver.AppleThunderboltPCIDownAdapter    1.2.5
com.apple.iokit.IOUSBHIDDriver    5.0.0
com.apple.driver.AppleUSBMergeNub    5.0.7
com.apple.driver.AppleUSBComposite    5.0.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice    3.2.1
com.apple.iokit.IOBDStorageFamily    1.7
com.apple.iokit.IODVDStorageFamily    1.7.1
com.apple.iokit.IOCDStorageFamily    1.7.1
com.apple.driver.AppleThunderboltNHI    1.6.0
com.apple.iokit.IOThunderboltFamily    2.0.3
com.apple.iokit.IOSCSIArchitectureModelFamily    3.2.1
com.apple.iokit.IOFireWireFamily    4.4.5
com.apple.iokit.IO80211Family    420.3
com.apple.iokit.IOEthernetAVBController    1.0.1b1
com.apple.iokit.IONetworkingFamily    2.1
com.apple.iokit.IOUSBUserClient    5.0.0
com.apple.iokit.IOAHCIFamily    2.0.8
com.apple.iokit.IOUSBFamily    5.0.8
com.apple.driver.AppleEFIRuntime    1.6.1
com.apple.iokit.IOHIDFamily    1.7.1
com.apple.iokit.IOSMBusFamily    1.1
com.apple.security.sandbox    177.5
com.apple.kext.AppleMatch    1.0.0d1
com.apple.driver.DiskImages    331.7
com.apple.iokit.IOStorageFamily    1.7.2
com.apple.driver.AppleKeyStore    28.18
com.apple.driver.AppleACPIPlatform    1.5
com.apple.iokit.IOPCIFamily    2.7
com.apple.iokit.IOACPIFamily    1.4

IMac G3 Kernel Panic - You need to restart your computer - HELP

I have an iMac G3 400Mhz slot-loading with 256MB 13GB running Mac OS 10.3.3. It was all along running Ok until I tried to do an OS updating recently. After update done, re-boot and I got this cyclic message "You need to restart your computer". Tried all methods like pressing CtrlOption+PR or Option during power-up but still the same. Now at a loss as I also cannot find my OS media installation CD anymore. Can anyone suggest how to remedy this? Worse case scenario, I don't mind clean re-load OS but need help in getting a copy of the Mac OS installation media.

Welcome To  Discussions KevK!
How much space is available on the 13 GB Hard Drive?
What peripherals do you have connected to the iBook?
Are there any programs or applications, that are set to load at Startup?
You may find use helpful tips in this document Resolving Kernel Panics, authored by Dr Smoke.
As the iMac G3 400 MHZ's, original pre-installed OS was Mac OS 8.6, the original system discs, will not be much help.
You will need to purchase a new set of Panther discs, or a newer version of OS X, if you wish to upgrade.
With a larger Hard Drive, and additional RAM, that iMac, is capable of running Tiger 10.4.x.
Tiger is available for purchase at The Apple Store (U.S.).
Panther, is no longer available directly from the Apple Online Store, as Leopard 10.5.x, is the most up to date OS.
But, if you know what to look for, a Full Retail Version, of the Panther Install CDs, or a Full Retail Version, of the Tiger Install DVD, can be purchased, sometimes less expensively, at some online Apple retailers, Amazon, eBay, FastMac, HardCore Mac, AllMac, etc.
Be sure not to purchase grey, upgrade or machine specific CDs or DVDs.
Panther is only on CDs, not DVDs.
The discs should look exactly like the images in the above links, and not say Upgrade, CPU Drop-in DVD, or "This software is part of a hardware bundle purchase - not to be sold seperately." on them.
Additional info in these links.
Using OS X Install CDs/DVDs On Multiple Macs
What's A Computer Specific Mac OS X Release
Software Update, Upgrade: What's The Difference?
Caveat Emptor!
If any are presently available, examine these items very carefully, and if in doubt, ask questions of the seller before purchase!
Panther On eBay
Tiger On eBay
Once Panther 10.3.x is re-installed, you can use the 10.3.9 Combo Update, to upgrade to the final version.
If your Mac meets the Tiger System Requirements, you could also consider installing that, and then use the PPC 10.4.11 Combo Update, to upgrade to the current version.
Additionally, Tiger 10.4.x ships on a DVD, so if your Mac doesn’t have a built-in DVD-ROM player, you will have to use an alternative method of installation.
Info here Installing Tiger Using Firewire Target Disk Mode.
And here Installing Tiger Without A DVD Drive.
The Tiger Media Exchange Program, referred to, is no longer available.
Shop Carefully, Examine All Documentation, And I Wish You Success!
ali b

Keep getting message - You need to restart your computer - iMac freezes

My iMac freezes without notice, a dark screen comes over the monitor and the message "you need to restart your computer" appears.
This happens randomly and I have no idea what causes this. I thought perhaps it was just a loose power cord, as the cord does seem quite loose.
However, it happens after the machine has been running for some time. Before I have a chance to save my work, the computer tells me it has to shut down. It's not a consistent thing, so it's hard to know if it's the cord or not.
This also happened half way through watching a DVD. Nothing was touched or moved, so it wouldn't appear that this is being caused by a loose cord.
Can anyone shed some light on this problem? (I'm running Tiger on this machine with 700+ megs of RAM plus am using a Mac keyboard. Airport is installed but not in use.

Hi there,
I would first make sure your Mac is or isn't on any list contained here: http://www.apple.com/support/exchange_repair/imac.html - you may in fact have a faulty power supply which is covered by repair extension through Apple.
Here's a brief explanation on a Kernel Panic: http://docs.info.apple.com/article.html?artnum=106227
Good luck, Rick
iMac G5 iSight 20" - 30G iPOD in Slimming Black - Mac OS X (10.4.8) - HP Pav 15" WS and Toshiba Sat 17" WS LP's - Canon 20D & A620 Kodak P880

My mac mini displays a green screen with 'mac os version not yet responded' and 'you need to restart your computer' as a warning message. Inspite of all my tries it doesnt run from the install dvd either.

My mac mini displays a green screen with 'mac os version not yet responded' and 'you need to restart your computer' as a warning message. Inspite of all my tries it doesnt run from the install dvd either.
Please help.

Sounds like you may have a hardware problem since it won't read from DVD, and it is only a year and a half old. Hopefully all it is, is bad RAM*:
http://www.macmaps.com/badram.html

I recently updated my MacBook Pro and now it says I need to restart every time I turn the computer on. It is on a grey screen.

I have not used my MacBook Pro for a few months and when I started it up did all the microsoft and system updates. Now it will not turn on and it goes to a grey page that state "You need to restart you computer. Hold down the Power button untilmitmturns off, then press the Power button again." I have done this several times and keep arriving at the same page.

OK, then there is little else to do other than to reinstall OS X.
Make sure you removed everything connected to the MBP including any USB devices.
If your Mac came with a System Install DVD, then insert it and hold the c key while starting your Mac. This will boot from the DVD instead of your internal disk.
If you find the grey screen reappears then it may not have restarted from the disc, so try again. You have to get past this step to do anything. If you can't, the problem may be a dirty or damaged DVD or an inoperative optical drive.
When it gets to the Mac OS C Utilities screen, select Disk Utility and repair your hard disk. Record any errors that it finds, since your problem may be due to a failed hard disk. If that is the case, the failure will probably arise again.
Then, reinstall OS X. Reinstalling is non-destructive to your user accounts or data.
If your Mac is running Lion, or Mountain Lion, you can boot OS X Recovery and perform all the above without a disc.
Read about OS X Recovery here: http://support.apple.com/kb/HT4718

"You need to restart your computer" over and over

So I just got a Powerbook G4 1.5GHz, and when I ran software updates, it installed a whole lot of things (like new iTunes, Mac OS X 10.4.4 I think). Now, when I start up my computer, it says, "You must restart your computer." So I do. Now, after 30+ restarts, I'm freakin' out... I feel like Sisyphus... any help would be greatly appreciated.
Powerbook G4 15" 1.5GHz Mac OS X (10.4) Brand new, factory except for software updates

OK, this is a kernel panic. It simply means that, at the point the message is appearing, the computers core (kernel) is receiving instructions it can't understand.
I would suggest that you first start up the computer while holding command-S. When the text stops scrolling, enter this command:
fsck -yf
Repeat it until the command's final message indicates a lack of problems.
Then type "reboot", and see what happens.
EDIT: I see that Allan has posted a link to The X Lab. This is a great resource, but I'm leaving my post as a quick start.

My Mac won't start up just shows " You need to restart your computer"

After my itune failure, my mouse turned to the spin but nothing happened but it's so bothering so I restart my computer.
When it restart, my Mac just won't start up stuck in the apple logo with the spinner below then suddenly shows up "You need to restart you computer. Hold down the Power button for serveral seconds or press the restart button."
Do anyone know how to fix this?

Classic kernel panic. See
What is a kernel panic,
Technical Note TN2063: Understanding and Debugging Kernel Panics,
Mac OS X Kernel Panic FAQ,
Resolving Kernel Panics, and
Tutorial: Avoiding and eliminating Kernel panics for more details.

I just updated to mountain lion and now pandora won't work, videos won't work, i can't access my iTunes.... the list goes on. HELP!

I recently updated to mountain lion and many of my most used programs won't work....
pandora
itunes
hulu
any vidoes.... says pop up blocked
somehow I can't change any of my security preferences
SUPER FRUSTRATING

So what happens if you go to System Preferences > Security & Privacy > General? Are you able to go there at all? If you are able to go there, can you unlock the preferences using the lock in the lower left and your login name and password?
If you are able to do this, can you change the "Allow applications downloaded from:" to Anywhere?
Best of luck.

When I boot up my machine, the apple logo comes up and the little pinwheel comes up as if it is loading up. Then another screen comes up stating "you need to restart your computer. Hold down the power button for several seconds...." any thoughts?

I have already tried to start in safe mode. No go. I tried the single mode option as well. Volume ok. I don't have the os x disc. The computer was given to me because they could not fix the problem. Not computer smart. Does anyone have any ideas?

Apple may still supply the original restore CDs/DVDs for a nominal fee. Have your serial number and model information available when you call them. You do not have to be the original owner.
AppleCare Support Phone Number: 1-800-275-2273
open 6am to 6pm Pacific Time
Apple Phone Sales 1-800-692-7753
International Technical Support Numbers
http://www.apple.com/support/contact/phone_contacts.html
"You have to call Apple & likely ask for a Product Specialist to get it (Leopard), if they still have it... helps if you tell them you have a new iPhone (iPad) that needs it!"
BDAqua
Requirements for Mac OS X v10.5
http://support.apple.com/kb/HT3759

"You need to restart your computer....." message just after starting snow leopard instalation on clean disk

Dear All
I try to install snow leopard on clean disk of my mac pro but after some seconds of processing, before any menu appears I get error message, saying I need to restart computer. I tried all suggestions I could find, but nothing is working. Would you advise please, what may be the problem cause?
Appreciate any help.
Best Regards
Bartosz

You need to be running 10.6.6 to 10.6.8 to get the Mac App store.
Access to the Mac App Store would let you download (or re-download) 10.7.
So, YES, a retail 10.6 DVD would solve the problem.
Do you have another Mac?
There are a few more things you could do using another Mac:
1) you could hook up another Mac in FireWire target disk mode, and clone its drive onto yours. That could get you going IF the version installed on that other Mac is a separatley Purchased version.
2) You could copy the Recovery_HD from a Mac with a separately Purchased version of 10.7, and then use it to download a copy from the Mac App store.

Where have my cc files gone? I have just updated my cc app and now, have no cc folder on my computer

I spent last week syncing 50GB of data in my cc folder and two computers. Now the cc app has updated and the folder has disappeared from my computer.Where have they gone?

yeah...check out the post about it here - Why do I have 3 'Creative Cloud Files' folders?

Just updated on my iMac and now have continual 'You need to restart your computer ...' What can I do?

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