Imac 27 Buzzing while sleeping or shutdown...

Hi evreybody and first of all sorry for my English...
Here's my problem : When my Imac 27 ( 2011 version ) is shutdown or sleeping there a buzzing "electrical" sound ( like an high tension cable ) behind the screen.
I've read a lot of posts abour this problem and even found some video with the same sound.
Do you think I have to return my Imac to the Apple center near me?
Do you think it's a power supply issue?
Thanks for your precious help!!!

Hello & welcome to the forums... your english great by the way, better than many that only speak English!
Do you have any USB or Firewire devices attached?
Could you have a Ground loop somewhere?

Similar Messages

IMac power draw while sleeping?

My macbook used to draw 1-2 watts while asleep. My iMac us drawing 11-17. This seems a bit high. Even an older PC desktop I had would only draw 3-4 (dual core, beefy vid card, multiple HDD's, etc).
I'm wondering what others experience when their iMac is sleeping. Even though mine is a 24", I'd be happy to hear from anyone with an alu iMac. I'd also like to hear any suggestions for things to look at as possible energy draws while sleeping.
Thanks

Very strange.
If you go to this page: http://www.apple.com/environment/resources/specs.html
and then click on Environmental attributes listing you will see that specified power draw whilst asleep is approximately 2.4 watts.
If you have MEASURED the power draw at 11-17 watts during sleep mode, I would take it into your local Apple Store.

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Thanks,
BC

HI BC,
Check System Preferences/Energy Saver. Click the Schedule button bottom right in that pane and make sure it's not set to turn off at a certain time.
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Carolyn

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Imac crashes while sleeping

Purchased in Sept 10. Occasionally my imac crashes while sleeping. Go to use and it is off. see crash report
Thanks Judy
Process: CFD [196]
Path: /Users/judybarnett/Library/Application Support/BroadJump/Client Foundation/CFD
Identifier: CFD
Version: ??? (34766848)
Code Type: PPC (Translated)
Parent Process: launchd [129]
Date/Time: 2011-04-09 09:14:54.893 -0700
OS Version: Mac OS X 10.6.7 (10J869)
Report Version: 6
Exception Type: EXCBADACCESS (SIGBUS)
Exception Codes: KERNPROTECTIONFAILURE at 0x0000000000000000
Crashed Thread: 12
Thread 0: Dispatch queue: com.apple.main-thread
0 LaunchCFMApp 0xb815aa8b spinlockwrapper + 89587
1 LaunchCFMApp 0xb818c3eb CallPPCFunctionAtAddressInt + 173427
2 LaunchCFMApp 0xb818eeec CallPPCFunctionAtAddressInt + 184436
3 LaunchCFMApp 0xb80e88cb 0xb8000000 + 952523
4 ??? 0x8abca071 0 + 2327617649
Thread 1:
0 libSystem.B.dylib 0x8014309a machmsgtrap + 10
1 libSystem.B.dylib 0x80143807 mach_msg + 68
2 LaunchCFMApp 0xb819440f CallPPCFunctionAtAddressInt + 206231
3 libSystem.B.dylib 0x801707fd pthreadstart + 345
4 libSystem.B.dylib 0x80170682 thread_start + 34
Thread 2:
0 LaunchCFMApp 0xb815acc0 spinlockwrapper + 90152
1 LaunchCFMApp 0xb8179c5b CallPPCFunctionAtAddressInt + 97763
2 LaunchCFMApp 0xb80c6b13 0xb8000000 + 813843
3 LaunchCFMApp 0xb80c0037 0xb8000000 + 786487
4 LaunchCFMApp 0xb80dd8e8 0xb8000000 + 907496
5 LaunchCFMApp 0xb8145397 spinlockwrapper + 1791
6 LaunchCFMApp 0xb801ceb7 0xb8000000 + 118455
Thread 3:
0 LaunchCFMApp 0xb815a8ff spinlockwrapper + 89191
1 LaunchCFMApp 0xb8176e5d CallPPCFunctionAtAddressInt + 85989
2 LaunchCFMApp 0xb80c6b13 0xb8000000 + 813843
3 LaunchCFMApp 0xb80c0037 0xb8000000 + 786487
4 LaunchCFMApp 0xb80dd8e8 0xb8000000 + 907496
5 LaunchCFMApp 0xb8145397 spinlockwrapper + 1791
6 LaunchCFMApp 0xb801ceb7 0xb8000000 + 118455
Thread 4:
0 LaunchCFMApp 0xb815a8ff spinlockwrapper + 89191
1 LaunchCFMApp 0xb8176e5d CallPPCFunctionAtAddressInt + 85989
2 LaunchCFMApp 0xb80c6b13 0xb8000000 + 813843
3 LaunchCFMApp 0xb80c0037 0xb8000000 + 786487
4 LaunchCFMApp 0xb80dd8e8 0xb8000000 + 907496
5 LaunchCFMApp 0xb8145397 spinlockwrapper + 1791
6 LaunchCFMApp 0xb801ceb7 0xb8000000 + 118455
Thread 5:
0 LaunchCFMApp 0xb815abd0 spinlockwrapper + 89912
1 LaunchCFMApp 0xb8170340 CallPPCFunctionAtAddressInt + 58568
2 LaunchCFMApp 0xb80c6b13 0xb8000000 + 813843
3 LaunchCFMApp 0xb80c0037 0xb8000000 + 786487
4 LaunchCFMApp 0xb80dd8e8 0xb8000000 + 907496
5 LaunchCFMApp 0xb8145c1d spinlockwrapper + 3973
6 LaunchCFMApp 0xb801ceb7 0xb8000000 + 118455
Thread 6:
0 LaunchCFMApp 0xb815ad03 spinlockwrapper + 90219
1 LaunchCFMApp 0xb81749fb CallPPCFunctionAtAddressInt + 76675
2 LaunchCFMApp 0xb80c6b13 0xb8000000 + 813843
3 LaunchCFMApp 0xb80c0037 0xb8000000 + 786487
4 LaunchCFMApp 0xb80dd8e8 0xb8000000 + 907496
5 LaunchCFMApp 0xb8145c1d spinlockwrapper + 3973
6 LaunchCFMApp 0xb801ceb7 0xb8000000 + 118455
Thread 7:
0 LaunchCFMApp 0xb815aa8b spinlockwrapper + 89587
1 LaunchCFMApp 0xb818c3eb CallPPCFunctionAtAddressInt + 173427
2 LaunchCFMApp 0xb818eeec CallPPCFunctionAtAddressInt + 184436
3 LaunchCFMApp 0xb80e88cb 0xb8000000 + 952523
4 ??? 0x8abb8831 0 + 2327545905
Thread 8:
0 LaunchCFMApp 0xb815aa8b spinlockwrapper + 89587
1 LaunchCFMApp 0xb818c3eb CallPPCFunctionAtAddressInt + 173427
2 LaunchCFMApp 0xb818eeec CallPPCFunctionAtAddressInt + 184436
3 LaunchCFMApp 0xb80e88cb 0xb8000000 + 952523
4 ??? 0x8abb8831 0 + 2327545905
Thread 9:
0 LaunchCFMApp 0xb815aa8b spinlockwrapper + 89587
1 LaunchCFMApp 0xb818c3eb CallPPCFunctionAtAddressInt + 173427
2 LaunchCFMApp 0xb818eeec CallPPCFunctionAtAddressInt + 184436
3 LaunchCFMApp 0xb80e88cb 0xb8000000 + 952523
4 ??? 0x8abb8831 0 + 2327545905
Thread 10:
0 LaunchCFMApp 0xb815a93a spinlockwrapper + 89250
1 LaunchCFMApp 0xb8176f67 CallPPCFunctionAtAddressInt + 86255
2 LaunchCFMApp 0xb80c6b13 0xb8000000 + 813843
3 LaunchCFMApp 0xb80c0037 0xb8000000 + 786487
4 LaunchCFMApp 0xb80dd8e8 0xb8000000 + 907496
5 LaunchCFMApp 0xb8145c1d spinlockwrapper + 3973
6 LaunchCFMApp 0xb801ceb7 0xb8000000 + 118455
Thread 11:
0 LaunchCFMApp 0xb815aa8b spinlockwrapper + 89587
1 LaunchCFMApp 0xb818c3eb CallPPCFunctionAtAddressInt + 173427
2 LaunchCFMApp 0xb818eeec CallPPCFunctionAtAddressInt + 184436
3 LaunchCFMApp 0xb80e88cb 0xb8000000 + 952523
4 ??? 0x8abb8831 0 + 2327545905
Thread 12 Crashed:
0 ??? 0x8ab8f4d1 0 + 2327377105
Thread 13:
0 LaunchCFMApp 0xb815aa8b spinlockwrapper + 89587
1 LaunchCFMApp 0xb818c3eb CallPPCFunctionAtAddressInt + 173427
2 LaunchCFMApp 0xb818eeec CallPPCFunctionAtAddressInt + 184436
3 LaunchCFMApp 0xb80e88cb 0xb8000000 + 952523
4 ??? 0x8abb8831 0 + 2327545905
Thread 12 crashed with X86 Thread State (32-bit):
eax: 0x9250a8bc ebx: 0xb81454d2 ecx: 0x0000004c edx: 0x00000000
edi: 0xb81f8714 esi: 0xb81f86f0 ebp: 0x00850980 esp: 0xb05aeefc
ss: 0x0000001f efl: 0x00010202 eip: 0x8ab8f4d1 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x0000001f gs: 0x00000037
cr2: 0x00000000
Binary Images:
0x80000000 - 0x8005dff7 com.apple.framework.IOKit 2.0 (???) <A769737F-E0D6-FB06-29B4-915CF4F43420> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x8007d000 - 0x800e7fe7 libstdc++.6.dylib 7.9.0 (compatibility 7.0.0) <411D87F4-B7E1-44EB-F201-F8B4F9227213> /usr/lib/libstdc++.6.dylib
0x80142000 - 0x802e9ff7 libSystem.B.dylib 125.2.10 (compatibility 1.0.0) <ADF8138B-2384-2FC0-CCBF-C4721B53568A> /usr/lib/libSystem.B.dylib
0x8036b000 - 0x804e6fe7 com.apple.CoreFoundation 6.6.4 (550.42) <C78D5079-663E-9734-7AFA-6CE79A0539F1> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x805de000 - 0x805ecfe7 libz.1.dylib 1.2.3 (compatibility 1.0.0) <E1B922F4-23DC-467E-631F-7E1B9C9F51CB> /usr/lib/libz.1.dylib
0x805f1000 - 0x805fdff7 libkxld.dylib ??? (???) <F0E915AD-6B32-0D5E-D24B-B188447FDD23> /usr/lib/system/libkxld.dylib
0x80601000 - 0x80647ff7 libauto.dylib ??? (???) <29422A70-87CF-10E2-CE59-FEE1234CFAAE> /usr/lib/libauto.dylib
0x80654000 - 0x807d6fe7 libicucore.A.dylib 40.0.0 (compatibility 1.0.0) <D375C1CF-C88D-C5F6-3C49-CD429023FBAC> /usr/lib/libicucore.A.dylib
0x80838000 - 0x808e5fe7 libobjc.A.dylib 227.0.0 (compatibility 1.0.0) <F237B77D-75A3-7240-931D-4735B91D365F> /usr/lib/libobjc.A.dylib
0x808f9000 - 0x808fcfe7 libmathCommon.A.dylib 315.0.0 (compatibility 1.0.0) <1622A54F-1A98-2CBE-B6A4-2122981A500E> /usr/lib/system/libmathCommon.A.dylib
0x8fe00000 - 0x8fe4162b dyld 132.1 (???) <283EE026-C0FE-1FF9-DB81-BFB155793157> /usr/lib/dyld
0xb8000000 - 0xb81defff LaunchCFMApp ??? (???) <6437A74D-607F-7339-5F7E-F6B0EF81C25D> /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp
0xffff0000 - 0xffff1fff libSystem.B.dylib ??? (???) <ADF8138B-2384-2FC0-CCBF-C4721B53568A> /usr/lib/libSystem.B.dylib
Translated Code Information:
objc[196]: garbage collection is ON
Rosetta Version: 22.27
Args: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp /Users/judybarnett/Library/Application Support/BroadJump/Client Foundation/CFD
Exception: EXCBADACCESS (0x0001)
Thread 0: (0xb04aad70, 0xb815a93a)
0x90451a44: /usr/lib/libSystem.B.dylib : _pthread_condwait + 880
0x929ae96c: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _TSWaitOnConditionTimedRelative + 240
0x929b09e8: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _TSWaitOnSemaphoreCommon + 468
0x9298928c: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _TimerThread + 112
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x00000000 lr: 0x90451a88 ctr: 0x903b4b30
r00: 0xffffffd9 r01: 0xf0488890 r02: 0x00000001 r03: 0x00005703
r04: 0x00005503 r05: 0x00000008 r06: 0x3b3ed6f0 r07: 0x00000000
r08: 0x1cafa774 r09: 0x00000001 r10: 0xf0488e78 r11: 0xa005d69c
r12: 0x903b4b30 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x92a1f1cc r19: 0x92a1f1d0
r20: 0xa00646d0 r21: 0x92a1f1d4 r22: 0x00000000 r23: 0x00000000
r24: 0x00000008 r25: 0x00000001 r26: 0xa006471c r27: 0xf0488e78
r28: 0xa054c02c r29: 0x3b3ed6f0 r30: 0xa054c060 r31: 0x904516e0
Thread 1: (0xb032484c, 0xb815aa8b)
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
0x929ad558: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _YieldToThread + 524
0x929ad6bc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _SetThreadState + 180
0x929ad7a4: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _SetThreadStateEndCritical + 136
0x7f48dff4: No symbol
0x7f48bb28: No symbol
0x7f48b9d0: No symbol
0x7f48c5bc: No symbol
0x7f48e6a4: No symbol
0x929adebc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _CooperativeThread + 348
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x00000000 lr: 0x903b51e4 ctr: 0x903b4ab0
r00: 0xffffffe1 r01: 0xf0305af0 r02: 0x00000013 r03: 0xf0305bac
r04: 0x00000003 r05: 0x00000018 r06: 0x00000020 r07: 0x00006603
r08: 0x00000000 r09: 0x00000000 r10: 0xa0073028 r11: 0xa005d190
r12: 0x903b4ab0 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0x00000000
r20: 0x00000000 r21: 0x00000000 r22: 0xf0305bac r23: 0x00000018
r24: 0x00000020 r25: 0x00006603 r26: 0x00000000 r27: 0x00000000
r28: 0x00000003 r29: 0x00000003 r30: 0x00000000 r31: 0x929ad354
Thread 2: Crashed (0xb05aeefc, 0x8ab8f4d1)
0x925512f4: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation : _CFEqual + 352
0x02a6b198: /Users/judybarnett/Library/Application Support/BroadJump/Client Foundation/NetworkConfigR.bundle/Contents/MacOS/NetworkConfigR : _IterateOverEthernetInterfaces + 960
0x02a6b3a0: /Users/judybarnett/Library/Application Support/BroadJump/Client Foundation/NetworkConfigR.bundle/Contents/MacOS/NetworkConfigR : NCPortCountPorts + 28
0x02a6bd44: /Users/judybarnett/Library/Application Support/BroadJump/Client Foundation/NetworkConfigR.bundle/Contents/MacOS/NetworkConfigR : NCxPortCountPorts + 76
0x7f4172ec: No symbol
0x7a603188: No symbol
0x7a620f04: No symbol
0x7a732da0: No symbol
0x7a731dc0: No symbol
0x7a734788: No symbol
0x7f4f3bac: No symbol
0x7f4e6050: No symbol
0x7f4e4f70: No symbol
0x7f48e6a4: No symbol
0x929adebc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _CooperativeThread + 348
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x00000000 lr: 0x9250a8bc ctr: 0x9250a8b4
r00: 0x00000400 r01: 0xf058a160 r02: 0xa050939c r03: 0x00000000
r04: 0x02834c70 r05: 0x02833b50 r06: 0x02834c70 r07: 0x02833b58
r08: 0x02833b50 r09: 0xa050a8bc r10: 0x0000008c r11: 0x0000004c
r12: 0x9250a8b4 r13: 0x02a6adf8 r14: 0x00000000 r15: 0x02a6adf8
r16: 0x02a6adf8 r17: 0xf058a298 r18: 0x00000000 r19: 0x02832830
r20: 0x028019d0 r21: 0x00000001 r22: 0x00000000 r23: 0x00009107
r24: 0x00000000 r25: 0x00000019 r26: 0x00000000 r27: 0x00000001
r28: 0x00000000 r29: 0x9261909c r30: 0x00000000 r31: 0x9250a8bc
Thread 3: (0xb019ed74, 0xb815a8ff)
0x90538ac4: /usr/lib/libSystem.B.dylib : _dispatch_semaphore_waitslow + 248
0x905371b0: /usr/lib/libSystem.B.dylib : _dispatch_workerthread + 116
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x20000000 lr: 0x90538adc ctr: 0x903b4b20
r00: 0xffffffda r01: 0xf0182dc0 r02: 0x00000000 r03: 0x00002a03
r04: 0x00000040 r05: 0x3b9ab1a1 r06: 0x00000020 r07: 0x00000000
r08: 0x3b9ab1a1 r09: 0x00000000 r10: 0x3b9ab1a1 r11: 0xa005d694
r12: 0x903b4b20 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0x00000000
r20: 0x00000000 r21: 0xa00637cc r22: 0xa00637c0 r23: 0xa00637c8
r24: 0x00000016 r25: 0x10479d79 r26: 0xa006350c r27: 0x00000040
r28: 0x0000000f r29: 0x224d31a1 r30: 0xa00637a0 r31: 0x905389d4
Thread 4: (0xb02a2d44, 0xb815ad03)
0x90451a44: /usr/lib/libSystem.B.dylib : _pthread_condwait + 880
0x02acfdf0: /System/Library/PrivateFrameworks/OpenTransport.framework/Versions/A/OpenTransp ort : _CarbonOperationThreadFunc + 172
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x00000000 lr: 0x90451bb0 ctr: 0x9049f194
r00: 0x0000014e r01: 0xf0284aa0 r02: 0xf0284aec r03: 0x00005303
r04: 0x00005403 r05: 0x00000000 r06: 0x00000000 r07: 0x00000000
r08: 0x00000000 r09: 0x00000000 r10: 0x000fc040 r11: 0xa005d1ac
r12: 0x9049f194 r13: 0xf0284bb4 r14: 0xf0284bb0 r15: 0xf0284bac
r16: 0xf0284ba8 r17: 0xf0284ba4 r18: 0xf0284ba0 r19: 0xf0284d08
r20: 0xf0284b8c r21: 0x02ae90c0 r22: 0x00000000 r23: 0x00000000
r24: 0x00000000 r25: 0x00000000 r26: 0xa006471c r27: 0x00000000
r28: 0x02821ff0 r29: 0x0384e200 r30: 0x02821f98 r31: 0x904516e0
Thread 5: (0xb009ad38, 0xb815acc0)
0x905374d8: /usr/lib/libSystem.B.dylib : _dispatch_mgrinvoke + 228
0x90536ebc: /usr/lib/libSystem.B.dylib : _dispatch_queueinvoke + 308
0x9053704c: /usr/lib/libSystem.B.dylib : _dispatch_workerthread2 + 372
0x90537188: /usr/lib/libSystem.B.dylib : _dispatch_workerthread + 76
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x20000000 lr: 0x905374a0 ctr: 0x903f8744
r00: 0x0000016b r01: 0xf0080bb0 r02: 0x00000000 r03: 0x00000004
r04: 0x00000000 r05: 0x00000000 r06: 0xf0080d0c r07: 0x00000001
r08: 0xf0080d28 r09: 0x00000000 r10: 0x0000003d r11: 0xa005c530
r12: 0x903f8744 r13: 0x10624dd3 r14: 0x90586b04 r15: 0xf0080c0c
r16: 0xf0080c8c r17: 0xa00773fc r18: 0xf0080d28 r19: 0xa0071570
r20: 0xa0072570 r21: 0xf0080d0c r22: 0xa00714f0 r23: 0xa0071470
r24: 0xa00773fc r25: 0x00000000 r26: 0xa006362c r27: 0x00000000
r28: 0xa0063604 r29: 0xa006333c r30: 0xf0080d28 r31: 0x905373fc
Thread 6: (0xb042884c, 0xb815aa8b)
0x00002328: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : _main + 196
0x929ad558: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _YieldToThread + 524
0x929ad6bc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _SetThreadState + 180
0x929ad7a4: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _SetThreadStateEndCritical + 136
0x7f48dff4: No symbol
0x7f48bb28: No symbol
0x7f48b9d0: No symbol
0x7f4cb824: No symbol
0x7f4cafe0: No symbol
0x7f4cadb8: No symbol
0x7f4e548c: No symbol
0x7f4f3a3c: No symbol
0x7cdd2630: No symbol
0x7f4f3bac: No symbol
0x7f4e6050: No symbol
0x7f4e4f70: No symbol
0x7f48e6a4: No symbol
0x929adebc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _CooperativeThread + 348
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x20000000 lr: 0x903b51e4 ctr: 0x903b4ab0
r00: 0xffffffe1 r01: 0xf0407840 r02: 0x00000013 r03: 0xf04078fc
r04: 0x00000003 r05: 0x00000018 r06: 0x00000020 r07: 0x00007d03
r08: 0x00000000 r09: 0x00000000 r10: 0xa0065760 r11: 0xa005d190
r12: 0x903b4ab0 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0x00000000
r20: 0x00000000 r21: 0x00000000 r22: 0xf04078fc r23: 0x00000018
r24: 0x00000020 r25: 0x00007d03 r26: 0x00000000 r27: 0x00000000
r28: 0x00000003 r29: 0x00000003 r30: 0x00000000 r31: 0x929ad354
Thread 7: (0xb0220d78, 0xb815abd0)
0x02ace0cc: /System/Library/PrivateFrameworks/OpenTransport.framework/Versions/A/OpenTransp ort : BSDwatchevent + 44
0x02ad3788: /System/Library/PrivateFrameworks/OpenTransport.framework/Versions/A/OpenTransp ort : _CarbonSelectThreadFunc + 228
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x00000000 lr: 0x02ace060 ctr: 0x903f670c
r00: 0x00000000 r01: 0xf0203d50 r02: 0x02ae4f1c r03: 0x000000e8
r04: 0xf0203e08 r05: 0x00000000 r06: 0x00000000 r07: 0x01000000
r08: 0x02ae5b08 r09: 0x434f4e44 r10: 0xffffffff r11: 0x02ae81a0
r12: 0x903f670c r13: 0x02ae36b4 r14: 0xf0203e24 r15: 0xf0203e5f
r16: 0xf0203e50 r17: 0xf0203e4c r18: 0xf0203e54 r19: 0x70636c73
r20: 0xf0203e08 r21: 0x0fffffff r22: 0x00000000 r23: 0x02ae90c0
r24: 0x00000000 r25: 0x02af36b4 r26: 0x00000000 r27: 0xf0203e58
r28: 0xf0203e08 r29: 0x00000000 r30: 0x00000000 r31: 0x02ad36b4
Thread 8: (0xb052c84c, 0xb815aa8b)
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
0x929ad558: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _YieldToThread + 524
0x7f48ca9c: No symbol
0x7f4d0a20: No symbol
0x7f4e6050: No symbol
0x7f4e4f70: No symbol
0x7f48e6a4: No symbol
0x929adebc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _CooperativeThread + 348
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x00000000 lr: 0x903b51e4 ctr: 0x903b4ab0
r00: 0xffffffe1 r01: 0xf0509b90 r02: 0x00000013 r03: 0xf0509c4c
r04: 0x00000003 r05: 0x00000018 r06: 0x00000020 r07: 0x0000830f
r08: 0x00000000 r09: 0x00000000 r10: 0xa0073028 r11: 0xa005d190
r12: 0x903b4ab0 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0x00000000
r20: 0x00000000 r21: 0x00000000 r22: 0xf0509c4c r23: 0x00000018
r24: 0x00000020 r25: 0x0000830f r26: 0x00000000 r27: 0x00000000
r28: 0x00000003 r29: 0x00000003 r30: 0x00000000 r31: 0x929ad354
Thread 9: (0xb7fff41c, 0xb815aa8b)
0x08000000: No symbol
0x929ad558: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _YieldToThread + 524
0x7f48ca9c: No symbol
0x7f4e1270: No symbol
0x7f4fa0a4: No symbol
0x7bdb38c4: No symbol
0x7bdb39d0: No symbol
0x7bdae558: No symbol
0x7cdd3270: No symbol
0x7cdd3c70: No symbol
0x7cdce878: No symbol
0x7cdd0068: No symbol
0x7cdcef20: No symbol
0x7f5eb418: No symbol
0x7f5ed0c4: No symbol
0x7f5ed16c: No symbol
0x7f5ecd4c: No symbol
0x7f5da1a0: No symbol
0x7f5d8024: No symbol
0x7f5cc15c: No symbol
0x7f5cbdbc: No symbol
0x7f5cbb08: No symbol
0x7f5eae84: No symbol
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x20000000 lr: 0x903b51e4 ctr: 0x903b4ab0
r00: 0xffffffe1 r01: 0xbfffe6a0 r02: 0x00000013 r03: 0xbfffe75c
r04: 0x00000003 r05: 0x00000018 r06: 0x00000020 r07: 0x00006503
r08: 0x00000000 r09: 0x00000000 r10: 0x000ddf08 r11: 0xa005d190
r12: 0x903b4ab0 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0xa00646d0
r20: 0xffffffff r21: 0xbffff710 r22: 0xbfffe75c r23: 0x00000018
r24: 0x00000020 r25: 0x00006503 r26: 0x00000000 r27: 0x00000000
r28: 0x00000003 r29: 0x00000003 r30: 0x00000000 r31: 0x929ad354
Thread 10: (0xb011cd74, 0xb815a8ff)
0x90538ac4: /usr/lib/libSystem.B.dylib : _dispatch_semaphore_waitslow + 248
0x905371b0: /usr/lib/libSystem.B.dylib : _dispatch_workerthread + 116
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x20000000 lr: 0x90538adc ctr: 0x903b4b20
r00: 0xffffffda r01: 0xf0101dc0 r02: 0x00000000 r03: 0x00002a03
r04: 0x00000040 r05: 0x3b9aaf3d r06: 0x00000020 r07: 0x00000000
r08: 0x3b9aaf3d r09: 0x00000000 r10: 0x3b9aaf3d r11: 0xa005d694
r12: 0x903b4b20 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0x00000000
r20: 0x00000000 r21: 0xa00637cc r22: 0xa00637c0 r23: 0xa00637c8
r24: 0x00000016 r25: 0x12673c4f r26: 0xa006350c r27: 0x00000040
r28: 0x0000000f r29: 0x224d2f3d r30: 0xa00637a0 r31: 0x905389d4
Thread 11: (0xb063084c, 0xb815aa8b)
0x7f4cd934: No symbol
0x929ad558: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _YieldToThread + 524
0x7f48ca9c: No symbol
0x7f4cad20: No symbol
0x7f4cbbe8: No symbol
0x7f4e0e50: No symbol
0x7f4e1268: No symbol
0x7f4fa0a4: No symbol
0x7a61df88: No symbol
0x7a619b9c: No symbol
0x78f91550: No symbol
0x78fa3b60: No symbol
0x78fa79b0: No symbol
0x78fa8008: No symbol
0x7f4f3bac: No symbol
0x7f4e6050: No symbol
0x7f4e4f70: No symbol
0x7f48e6a4: No symbol
0x929adebc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _CooperativeThread + 348
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x00000000 lr: 0x903b51e4 ctr: 0x903b4ab0
r00: 0xffffffe1 r01: 0xf060b400 r02: 0x00000013 r03: 0xf060b4bc
r04: 0x00000003 r05: 0x00000018 r06: 0x00000020 r07: 0x00008a07
r08: 0x00000000 r09: 0x00000000 r10: 0x000dda20 r11: 0xa005d190
r12: 0x903b4ab0 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0x00000000
r20: 0x00000000 r21: 0x00000000 r22: 0xf060b4bc r23: 0x00000018
r24: 0x00000020 r25: 0x00008a07 r26: 0x00000000 r27: 0x00000000
r28: 0x00000003 r29: 0x00000003 r30: 0x00000000 r31: 0x929ad354
Thread 12: (0xb03a684c, 0xb815aa8b)
0xf0386c4f: No symbol
0x929ad558: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _YieldToThread + 524
0x929ad6bc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _SetThreadState + 180
0x929ad7a4: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _SetThreadStateEndCritical + 136
0x7f48d920: No symbol
0x7f43d5b8: No symbol
0x7f48c260: No symbol
0x7f48e6a4: No symbol
0x929adebc: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore : _CooperativeThread + 348
0x904552a8: /usr/lib/libSystem.B.dylib : _pthreadbody + 40
0x00000000: /System/Library/Frameworks/Carbon.framework/Versions/A/Support/LaunchCFMApp : + 0
PPC Thread State
srr0: 0x00000000 srr1: 0x00000000 vrsave: 0x00000000
cr: 0xXXXXXXXX xer: 0x20000000 lr: 0x903b51e4 ctr: 0x903b4ab0
r00: 0xffffffe1 r01: 0xf0386b40 r02: 0x00000013 r03: 0xf0386bfc
r04: 0x00000003 r05: 0x00000018 r06: 0x00000020 r07: 0x00006903
r08: 0x00000000 r09: 0x00000000 r10: 0x000dd520 r11: 0xa005d190
r12: 0x903b4ab0 r13: 0x00000000 r14: 0x00000000 r15: 0x00000000
r16: 0x00000000 r17: 0x00000000 r18: 0x00000000 r19: 0x00000000
r20: 0x00000000 r21: 0x00000000 r22: 0xf0386bfc r23: 0x00000018
r24: 0x00000020 r25: 0x00006903 r26: 0x00000000 r27: 0x00000000
r28: 0x00000003 r29: 0x00000003 r30: 0x00000000 r31: 0x929ad354

I'm very far from being expert at reading crash reports, but I don't think this is a kernel panic. I'm not seeing any signs of a KP in the logs. The following is basically some guesswork on my part and I might be completely wrong, but it may be worth thinking about.
In your crash report I'm seeing the process which seems to be responsible for the crash is BroadJump/Client Foundation/CFD
Process: CFD 196
Path: /Users/judybarnett/Library/Application Support/BroadJump/Client Foundation/CFD
Identifier: CFD
Version: ??? (34766848)
Code Type: PPC (Translated)
Here is what I've found from searching BroadJump/Client Foundation/CFD.
+5. BROADJUMP CLIENT FOUNDATION: During your use or installation of+
+the overall Licensed Software, the BroadJump Client Foundation+
+("CFD.exe") may be installed on your computer. The BroadJump Client+
+Foundation is a small application that facilitates communications+
+between the client software on your computer and your IAP's servers+
+that manage these applications. The BroadJump Client Foundation+
+periodically queries BroadJump or your IAP's servers for one or more+
+of the following reasons (a) to upload the subscriber registration+
+information that is collected at installation, or (b) to check for+
+available updates to your broadband access and support software or+
+messages from your IAP, or (c) for authentication to your IAP's servers for certain application communications.+
This is apparently some kind of software installed -- or which was possibly installed at some time in the past -- by your ISP (or possibly a former ISP.)
Path: /Users/judybarnett/Library/Application Support/BroadJump/Client Foundation/CFD
Exception Type: EXCBADACCESS (SIGBUS)
Exception Codes: KERNPROTECTIONFAILURE at 0x0000000000000000
The above means this is caused by "the thread trying to write to read only memory," and is always caused by an attempt to access some data. I'm also seeing that it was running under Rosetta, which is a translator for PPC Applications so they can be run under Intel, which is what your computer is now. My hypothesis, then, is that BroadJump/Client Foundation/CFD might be something you migrated from another PPC Mac when you got your current one, and it, or running it under Rosetta, may be making things unstable. You said this has been happening off and on since you got the new Mac. So, the question is did you use Migration Assistant to move things over from another computer and was that a PPC Mac? If not, that probably blows my theory completely out of the water. However, I would still want to understand what BroadJump is doing on your computer and why it is running under Rosetta.
If yes, my first instinct would be to uninstall BroadJump. But first, I would contact your ISP and ask them if it is a necessary part of the functioning of your Internet service. If so, there may be an Intel version they can supply or they can recommend a proper course of action.

G4 MacMini won't sleep or shutdown after update to 10.4.8

Since updating using software update to 10.4.8 on the logout screen I mostly used the "Sleep" option after logging out from my account. To begin with things seemed fine, but now, it won't go to sleep. If I click on the button to sleep the computer, the controls get greyed out for about 30 seconds to a minute, then return to their normal state - but the computer does not enter sleep mode.
Shutdown doesn't work either! I had to hold the power switch on the back down for a few seconds to force it to switch off. Interestingly, the internet connection light on the router was flashing irregularly while I was waiting for it to switch off.
I have reset the permissions (only after the install, not before), reset the PRAM, and searched the system preferences to see if something is glaringly obvious as being wrong but have found nothing and no have no further clue what I can do...
Is it related to my not wanting iTunes to provide Album Artwork at all? For some time, every time I opened iTunes it demanded I update my Album Artwork, but I don't want to and don't have an iTunes account. I had put off downloading both 10.4.8 and iTunes 7.0 for almost a week - until software update failed to provide a Cancel button for me to refuse again!
How can I get sleep and shutdown to work properly?
MacMini, PowerBook, PowerMac G5 DC Mac OS X (10.4.8) Mac OS X Server 10.4.8

Problem Solved!
I copied the combo update over the existing system but this alone changed nothing. Because I was unsure of which of my seemingly many OS X disks to load I rang Applecare (thank God I signed up for the three years of extra phone support - a real bargain) and they suggested I do a PMU reset - after which everything worked fine - so far.
They warned me about not doing a PMU reset very often (I guess the PMU can only stand a certain number of these events before breaking). In order to do one follow these steps:
1) Switch off computer;
2) Unplug ALL leads and power cables to the computer;
3) Wait ten seconds;
4) Simultaneously hold the power on button down while plugging the power cable in to your Mac;
5) Connect your other cables.
6) Switch on and go.
For me, this fixed all my other problems - Sleep, Restart, Shutdown, Printing, iSight, Internet connection speed, Quick Time performance, and so far I haven't seen anything else wrong to fix. Hopefully there won't be anything else to fix!
If anything does go wrong after this, I will do the Archive and Install, which was the next suggestion from Apple which I did not need to do. So far.
Thanks to all those who gave suggestions, I appreciate your help.
Thanks,
Mac

Which is better... Sleep or shutdown?

Which is better for your computer... sleep or shutdown?
Thanks

Technically, it doesn´t matter much if you shut your computer down or just put it to sleep., i.e. nothing is more detrimental to your computer´s "well-being" than the other, respectively.
I´m not sure about the Sleep Mode with the iMac, but I believe it´s a suspend-to-ram, right?
That would mean any unsaved data isn´t saved and could get lost if the computer fails to wake up from sleep.
That could be a point against making the computer sleep.
When it´s sleeping, the computer will also consume a steady, albeit very low quantity of electrical power. From an energy-saving standpoint, that could also be counted as a negative aspect.
MacBooks and MBPs use suspend-to-disk as sleep mode, which means the contents of the ram is saved onto the hard drive and then the computer is fully turned off. Takes a bit longer than suspend-to-ram.
I always put my computers to sleep... both my iBook G3 and my Win laptop.
My win laptop will automatically enter suspend-to-disk after 2 hours if it isn´t used again by then.
hth
ibook g3, acer travelmate w/ pentium m 725 Mac OS X (10.3.9)

IMac speaker buzz... ?

Hi all,
I apologize if this is a common issue; I've done some searching but haven't found anyone with my exact problem.
I've got a fairly old (I believe at least ten years) pair of Bose Roommate II speakers and a brand new (arrived yesterday) aluminum iMac. When I plug the speakers into the iMac, they buzz for exactly 30 seconds and then stop. Any time I play any kind of audio (including the sound effects in the OS like the feedback when you change the volume), they buzz for 30 seconds and then stop, as long as I don't play anything else. They buzz continuously if I'm listening to music or anything like that. It doesn't change volume if I change the output volume on the computer.
The speakers work flawlessly with my 2.16GHz MacBook and with both my iPods, so the speakers definitely aren't at fault here. The plug is seated firmly in the headphone jack. The fact that the time is so exact - 30 seconds on the dot - makes it seem like it's a built in thing - some internal component shutting down, maybe?
Any thoughts? Again, I'm sorry if this is a well-known issue or an obvious fix... my mom's the audiophile and she's out right now. TIA
Message was edited by: aqua*star

I have the same or similar problem. My imac is a week old and makes a humming and or buzzing sound. It's intermittent and happens especially when I go to get mail and there's no mail. It buzzed or hummed constantly today while I was on the internet. So I tried something. I disconnected my old Labtec external speakers and enabled the internal speakers. The noise stopped. I would here the humming with the volume turned all the way down on the Labtecs. Here's the crazy part. I have a voip telephone service that uses the router-so the phone is near the computer. With the Labtecs connected I picked up the phone to make a call. When I hit the on button the pitch of the hum changed on the computer. I did on and off on the phone about 10 times and the hum got higher and lower with each on and off. This is not happening with the Labtecs disconnected. Any thoughts.

Sleep, Restart, Shutdown loop - how do I get out of this loop?

I installed os X Panther on mom's older iMac.
Tonight, when it's booted it comes up with "sleep, restart, shutdown" options.
We've selected each of these 3 items, waited, then either woke it up, waited for it to restart, or restarted it from shutdown; however, again it will eventually show a screen that only allows her to select "sleep, restart, shutdown"
How does she get out of this loop?
Note: There is not option to cancel the screen that has "sleep, restart, shutdown."

* http://kb.mozillazine.org/Software_Update (Software Update not working properly)
It shouldn't be necessary to reboot the computer to complete an update.<br />
Download a fresh copy of Firefox ([http://www.mozilla.com/firefox/all.html]) and do a reinstall of Firefox on top of the current version.<br />
You may need to do a clean install:
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere (not in the Firefox program folder) and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

After Downloading Mountain Lion IMAC is having bluetooth sleep issues.

After downloading Mountain Lion my 21" IMAC is fine untill it goes into sleep mode for an extended period of time. When I try to wake the IMAC with the Bluetooth keyboard or mouse it will not wake up. I have to hold the power button down for 5 seconds. This does not happen untill the IMAC has been in sleep mode for a wihile (I don't know the amount of time) but if I am at the IMAC and it goes into sleep I and wake it with know problem it has to sleep for a while for the issue to kick in.
Thanks

Open Disk Utilities (Applications - Utilities - Disk Utilities) and run Repair Disk Permissions and then restart the computer and retest.

New iMac shuts down while downloading mountain lion update

New iMac shuts down while updating Mountain lion

Hi, any sleep settings set up, like put Disks to sleep?
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.

Firewire ports and power draw while sleeping

After plugging in a power meter, I noticed my iMac was puling approximately 13W while sleeping. A bit of unplugging narrowed it down to the firewire ports. Each one was pulling about 6W, even while sleeping.
Will the firewire ports still draw power if the device is turned off? I'm specifically interested in an external drive that has a hard power-off feature (as opposed to simply sleeping). I'd like to keep it plugged in (I had been unplugging the cable except when needed).
I now I can check this myself, but I'm using the power meter for another project right now and don't want to unplug it and start over, but would like an answer "now."
Thanks in advance.

An open cable connected to any port draws no power. Think of it as kind of a cable to nowhere. Now...connect it to some external object such as a printer or external hard drive and the current draw of the device determines how much power is drawn. Most devices in standby draw about 5-15W depending on their complexity.
virg

USB port powered while sleeping?

Does anyone know if any of the USB ports on an Intel 24" iMac are powered while my Mac is sleeping? So something like my phone will continue to charge while the Mac is asleep?
Thanks!

HI,
*Charging Tips*
"iPhone 3G and iPhone 3GS cannot be charged with a FireWire power adapter or FireWire-based car charger. Make sure your computer is on while charging iPhone via USB. _If iPhone is connected to a computer that’s turned off or is in sleep or standby mode, the iPhone battery may drain."_
From here: http://www.apple.com/batteries/iphone.html
Carolyn

Imac g5 crashes while asleep; can't boot from cd/dvd

My imac g5 crashes while asleep. Both the display and hard drive are set to sleep.
In trying to fix this problem with Apple tech support, I've discovered I can't boot from the cd/dvd. When I hold down the letter c while restarting, the disk ejects. I've tried three different disks: the install dvd, a Norton Systemworks bootable cd, and the bootable cd from AppleCare. All are ejected.
Have I got some hardware problem(s)?

Since we couldn't fix this over the phone, it's now at the Apple Store being fixed. They've replaced the power supply and, after I called again and made sure they tested it by having it sleep for a couple of hours (they couldn't wake it up after that), they're replacing the logic board.
I've been disappointed by the amount of hardware that's had to be replaced on this computer. I also had to replace the mid-plane assembly about six months after buying it in Sept. 2004.

HT1776 Hi, my iMac screen goes to sleep but the fan stays on 24hrs and never stops?

Hi, my iMac screen goes to sleep but the fan stays on 24hrs and never stops? You can hear it running all night.
Appreciate any advice.I'm using Lion. Many problems started since using Lion!

The temps are a bit higher than I'd expect under normal circumstances, and too high while playing games, but what is the room temp where it is?
I def. think its a temp thing now. but why does it only raise when im playing games or watching videos online?
Games tipically press the CPU, Video Card, RAM, and everything else much harder than most apps.
It may be a Fan not working properly, or just dust buildup.
Boot off your Install Disk while holding down the *d key*, (not c key), then run the extended Apple Hardware Test. Some disks require you to use the Option key at bootup to select AHT. Some models have a separate AHT CD.
Report any errors it finds.

Imac 27 Buzzing while sleeping or shutdown...

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