What would make my iMac start to smoke?

While working on,my computer tonight it shut down. t had been working fine but just simply lost power. When I turned it on, it was smoking! I turned it off immediately but there was quite a lot of smoke...scared me to death. What would cause that to happen? How long before I can turn it back on? Is there permanent damage to the computer? t did not feel not at all which it sometimes does.

I so much appreciate yours and Allan's vwrious options and suggestions. Ive been giving tne situation some careful thought and, while I can't really afford a new computer (who can? ) I think taking the plunge is probably the wisest thing to do. I don't think this computer is fixable, but even if it were, the cost would be significant and I would still have an iMac that is just over five years old. I"m thinking I would rather put possible repair costs towards a new ome.
My decision now is do I want a other iMac or should I get a laptop? The laptops are expensive but for a variety of reasons I think it would better serve my current and future needs. My only concern is that I have some vision problems that will probably make it necessary to get tne 15 inch and, yikes, is it expensive!!!
I must say, as I have since I got my first computer 15 years ago, I would never have made it without these Apple boards. I have had the best help and advice from everyone here...much better than calling Apple, although they are good as well. Thanks again for your help....beware, though, that when I get the new computer, you may be in even greater demand!

Similar Messages

What would make YOU upgrade from a 2011 to a 2012 MBA?

What would make you upgrade from a 2011 MBA to a 2012 MBA?
For me, the following woud be important for an 13'' MBA upgrade:
keep the low weight or even improve it
do not sacrifice battery life
offer an 8 GB memory option
offer USB 3.0 in addition to Thunderbolt
Pretty simple, isn't it?

carl wolf wrote:
There is no "2012 MBA".
True, but expecting a similar cycle of time between revisions is no more "strange" than expecting 2013 to arrive. I call it confidence in Apple's innovation cycles.
Yes, I suppose it is "speculating" in the harsh sense of the word, but so would talk about Apple's mere existence in the future. Right?

What would cause an IMAC to recognize one printer on a wireless network and not recognize another printer?

What would cause an IMAC to recognize one printer on a wireless network and not another printer? I have a smaller HP and a an HP 4600. The computer recognizes the smaller printer but not the bigger printer even though the printer in Settings and shows up on Settings, but I cannot print to it.

Do you have a printer driver installed for it? When you open the Print dialog have you selected it from the Printer dropdown menu at the top of the dialog?
Do you know that the printer is working and is properly installed (Added?)

What would make my Cp7 course get hung up during the loading process when launching on LMS?

In Cp7, I created a SCORM project to post on our LMS and submitted it for testing. Our LMS department confirmed it worked successfully, and in fact I tested it myself – it worked great. However, my work team asked me to make some changes to the content before pushing it out of the testing phase to launch company-wide. Per company policy, making changes to a course means resubmitting it once more to be tested before making it available to everybody. So I made the requested changes and resubmitted it for testing. Now our LMS department reports the course will not launch properly – it gets stuck in the loading process. It shows “Loading...” endlessly but never loads.
When I submitted the updated version for testing, I kept all the project settings that worked successfully the first time. The changes I made to the project were:
I added a slide toward the beginning (slide 2) to give the user navigation tips.
I set slides so that each one must play all the way through before the user can proceed to the next slide (I think I did this simply by removing “play” on the playbar”).
Under table of contents settings, I checked “navigate visited slides only,” so the user can navigate backwards using the contents bar at left, but can only navigate forward to slides that have already played or to the next slide in the queue.
I broke up a couple of lengthy multiple choice questions into shorter ones (for an additional two slides).
Is there any reason one of these changes would make the course get hung up during loading?
Is there a size limit Cp7 projects which, if exceeded, might be causing such an issue?
Or does anyone have ideas about what else might be making it get hung up in the loading process?
Thank you, any and all, for your feedback.

back up the iPhoto library like any other backup - make a copy of the iPhoto library in case of problems
you Depress the option (alt) and command keys and launch iPhoto - anyplace you can launch iPhoto you do this - keep the keys down until you get the rebuild window
LN

What would make a Mac power cord die?

My Mac power cord seems to be dying -- the green light is barely visible and it only charged my computer to 10% after all night. What would cause this and is there any remedy short of buying a new one?

Unfortunately, the power bricks are sealed and not user serviceable. At least when they do stuff like this. However, the problem may lie in the power circuits in the Mac. Best bet is to take it to an Apple Store or a Service Provider so they can run tests and determine the real cause. Heck, might get lucky and have it replaced for free!

What would cause my iMac to be slow to start up?

My iMac (intel) has become very slow to start up. Sometimes I have to shut down and try the start up a second time before it will complete the start up.

Hi..
Not enough free space on the startup disk can cause your iMac to slow down over time.
Right or control click the MacintoshHD icon. Click Get Info. In the Get Info window you will see Capacity and Available. Make sure there's a minimum of 15% free disk space.
iMac, Mac OS X (10.5.4)
Remove any items in System Preferences > Accounts > Login Items
Same for /Library/StartupItems

What would cause my iMac's desktop resolution to briefly readjust whenever I switch from my user to another?

I recently started to notice that whenever I switch from one user account to another on my recently purchased iMac, the resolution of my desktop wallpaper very briefly readjusts. Both users have the same default resolution and are using wallpaper that came standard with Mavericks. Does anyone have any suggestions as to what could be causing this?
Thanks!

Hello there, Conor68.
The following Knowledge Base article provides some great recommendations for troubleshooting display issues on your Mac:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Once you're reviewed the recommendations in regards to updates, this portion of the section on "No video or no signal, image distortion, "snow," or flickering" is useful:
Reset the system
You can reset the Mac's parameter RAM and SMC.
Reset the resolution
Start by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

What Could Make My iMac Stutter As It Records?

Until recently my iMac would record flawlessly when recording via the iSight camera or when importing from my DV camera, but now it stutters and stops? I have tried other programs on the web like Vidi and it's the same problem.
I am now suspecting a computer hardware problem. What could the problem be and how easy would it be to fix?
I am using a 2.16 GHz Intel Core 2 Duo.

Hello, Robert.
It may be better to post you're questions in the iMovie 6 (or '08) Discussions pages as opposed to the more general Snow Leopard side of these Discussions.
That said, I would run the "Hardware" tests found on the Snow Leopard DVD to try and rule some things out.
Have you tested the external camera using a different Firewire cable?
Does the camera have "external" power supply attached?
What software are you using to record the built in iSight camera?

What would make a JVM memory size 1.9GB ?

This is on Solaris 2.6, JDK 1.2.2_05a, JDK1.2.2_07, possibly JDK 1.3 (it crashed).
WLS 5.1, SP8. With inline_instrs_jit=0.
This is the [heap] segment shown by /usr/proc/bin/pmap. This is native heap, it is
NOT the Java Heap.
I know it could be the Type 2 db drivers - but I doubt it.
With JDK1.3 we set -XX:MaxPermSize=128m - it crashes after an hour.
One part of the application creates its own threads for some parallel processing.
Is this a known
problem with the JVMs?
Any help is much appreciated.
Mike Reiche

What is the 'Break difference' that the debug JVM shows? Is that the Java Heap? Or
is memory in the C Heap that is wasted by fragmentation?
============== C Heap Report ========================
mmap space 300515328
Committed space 95690752
Allocated space 34049316
Break difference 66060288
Breakdown by type:
ClassSpace 15252128
JITCompiledStackMaps 5277188
StackMap 1892672
Dependency 1856760
utf8_space 1854838
untagged 1783520
basicBlocksState 1664992
utf8_table 1055903
Class 811520
JITPrestub 610480
NearClass 531360
CardObjectTable 386048
JavaStack 257024
CheckingDone 200367
SummaryCardTable 193024
name_loader_cache_entry 65976
ScratchRecord 65548
basic_block_t 50896
IntfMethodTable 48960
stringTableOverflowRecord 46480
BitVectorElem 32768
ObjectMap 30724
ClassName 28407
Clinit 18752
Table_mem 18628
LoaderConstraintsTableEntry 11668
JITInlineByteCode 1928
LoaderConstraintsTableLoaderEntry 520
stateVecBuf 237
=====================================================
Total GC time: 2987981 ms
- Mike
"[email protected]" Mike wrote:
>
>
Aslo - GC[1] are taking way long (Debug JVM) - I'm used to seeing them taking
500
ms with the regular JVM. With -ms32m -m256m - I wanted GC[1] to run often
because
that has helped with other memory problems in the past - it doesn't work
so hot here.
GC[1] in 5514 ms: (38Mb, 0% free) -> (38Mb, 69% free)
GC[1] in 6300 ms: (38Mb, 0% free) -> (38Mb, 65% free)
GC[1] in 7130 ms: (38Mb, 0% free) -> (38Mb, 64% free)
GC[1] in 6158 ms: (38Mb, 2% free) -> (38Mb, 62% free)
GC[1] in 6171 ms: (38Mb, 0% free) -> (38Mb, 65% free)
GC[1] in 6885 ms: (38Mb, 0% free) -> (38Mb, 64% free)
GC[1] in 7403 ms: (38Mb, 0% free) -> (38Mb, 61% free)
GC[1] in 689101:25:49 PM PST {218} - Evaluation is: true
GC[1] in 6545 ms: (38Mb, 1% free) -> (38Mb, 61% free)
GC[1] in 7459 ms: (38Mb, 0% free) -> (38Mb, 62% free)
GC[1] in 6861 ms: (38Mb, 2% free) -> (38Mb, 58% free)
GC[1] in 6090 ms: (38Mb, 0% free) -> (38Mb, 56% free)
GC[1] in 6413 ms: (38Mb, 0% free) -> (38Mb, 60% free)
GC[1] in 8230 ms: (38Mb, 1% free) -> (38Mb, 58% free)
GC[1] in 7649 ms: (38Mb, 0% free) -> (38Mb, 54% free)
GC[1] in 7912 ms: (38Mb, 0% free) -> (38Mb, 55% free)
GC[1] in 7696 ms: (38Mb, 1% free) -> (38Mb, 57% free)
GC[1] in 6543 ms: (38Mb, 1% free) -> (38Mb, 60% free)
GC[1] in 7036 ms: (38Mb, 1% free) -> (38Mb, 59% free)
GC[1] in 7483 ms: (38Mb, 0% free) -> (38Mb, 56% free)
GC[1] in 5132 ms: (38Mb, 1% free) -> (38Mb, 59% free)
GC[1] in 8186 ms: (38Mb, 0% free) -> (38Mb, 53% free)
GC[1] in 5691 ms: (38Mb, 0% free) -> (38Mb, 58% free)
GC[1]01:35:49 PM PST {575} - Evaluation is: true
GC[1] in 8176 ms: (38Mb, 0% free) -> (38Mb, 46% free)
GC[1] in 8463 ms: (38Mb, 0% free) -> (38Mb, 47% free)
GC[1] in 7342 ms: (38Mb, 0% free) -> (42Mb, 41% free)
GC[1] in 6920 ms: (42Mb, 0% free) -> (49Mb, 41% free)
GC[1] in 8610 ms: (49Mb, 1% free) -> (60Mb, 40% free)
GC[1] in 9581 ms: (60Mb, 1% free) -> (60Mb, 50% free)
GC[1] in 10514 ms: (60Mb, 0% free) -> (60Mb, 59% free)
GC[1] in 9865 ms: (60Mb, 0% free) -> (60Mb, 60% free)
GC[1] in 11323 ms: (60Mb, 0% free) -> (60Mb, 57% free)
GC[1] in 18768 ms: (60Mb, 0% free) -> (60Mb, 60% free)
GC[1] in 11147 ms: (60Mb, 0% free) -> (60Mb, 55% free)
GC[1] in 7293 ms: (60Mb, 0% free) -> (60Mb, 42% free)
GC[1] in 9372 ms: (60Mb, 0% free) -> (60Mb, 53% free)
GC[1] in 8814 ms: (60Mb, 0% free) -> (60Mb, 55% free)
GC[1] in 9695 ms: (60Mb, 1% free) -> (60Mb, 54% free)
GC[1] in 7309 ms: (60Mb, 0% free) -> (60Mb, 53% free)
GC[1] in 8713 ms: (60Mb, 0% free) -> (60Mb, 54% free)
GC[1] in 11955 ms: (60Mb, 0% free) -> (60Mb, 55% free)
GC[1] in 12685 ms: (60Mb, 1% free) -> (60Mb, 55% free)
GC[1] in 18906 ms: (60Mb, 0% free) -> (60Mb, 58% free)
GC[1] in 13333 ms: (60Mb, 0% free) -> (60Mb, 51% free)
"[email protected]" <[email protected]> wrote:
Rob -
Thanks for your attention -
We create lots of threads - up to five threads for each DB hit (i didn't
design it).
The multi-threading will be disabled/removed and tested later on today.
Both 'top'
and pstack show around 85 threads.
I've read articles on the bea newsgroups about WL hanging on to threadreferences
so that the threads could not be GC'ed, but it sounded more like a customer's
impression
of what might be going on than something from BEA engineering.
Right now we are running with the 1.2.2_05a 'Debug' JVM with -verbose:gc
-verbose:gc
-verbose:gc
JVMARGS=verbose_c_heap,inline_instrs_jit=0
Unfortunately, some of the code being tested is now broken and not being
excercised
today. I will keep you posted.
- Mike
Rob Woollen <[email protected]> wrote:
How many threads are you creating?
Each thread uses some memory (stack etc.), but 1.9GB would be a lot of
thread creation.
-- Rob
Mike Reiche wrote:
This is on Solaris 2.6, JDK 1.2.2_05a, JDK1.2.2_07, possibly JDK 1.3
(it
crashed).
WLS 5.1, SP8. With inline_instrs_jit=0.
This is the [heap] segment shown by /usr/proc/bin/pmap. This is nativeheap, it is
NOT the Java Heap.
I know it could be the Type 2 db drivers - but I doubt it.
With JDK1.3 we set -XX:MaxPermSize=128m - it crashes after an hour.
One part of the application creates its own threads for some parallelprocessing.
Is this a known
problem with the JVMs?
Any help is much appreciated.
Mike Reiche--
Coming Soon: Building J2EE Applications & BEA WebLogic Server
by Michael Girdley, Rob Woollen, and Sandra Emerson
http://learnweblogic.com

Etrecheck results: See anything that would make this iMac slow?

Thanks for reading:
Problem description:
this mac is very slow, despite having good specs.
EtreCheck version: 2.1.6 (109)
Report generated January 21, 2015 at 2:37:59 PM PST
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
iMac (27-inch, Late 2012) (Technical Specifications)
iMac - model: iMac13,2
1 2.9 GHz Intel Core i5 CPU: 4-core
8 GB RAM Upgradeable
BANK 0/DIMM0
4 GB DDR3 1600 MHz ok
BANK 1/DIMM0
4 GB DDR3 1600 MHz ok
BANK 0/DIMM1
empty empty empty empty
BANK 1/DIMM1
empty empty empty empty
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
NVIDIA GeForce GTX 660M - VRAM: 512 MB
iMac 2560 x 1440
System Software: ℹ️
OS X 10.10.1 (14B25) - Time since boot: 0:22:8
Disk Information: ℹ️
APPLE HDD ST1000DM003 disk0 : (1 TB)
EFI (disk0s1) <not mounted> : 210 MB
JLA 21 (disk0s2) / : 999.35 GB (526.05 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
USB Information: ℹ️
Apple Inc. FaceTime HD Camera (Built-in)
Apple, Inc. Keyboard Hub
Apple, Inc Apple Keyboard
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/System/Library/Extensions
[not loaded] com.palm.ClassicNotSeizeDriver (3.2.1) [Support]
Startup Items: ℹ️
AgentMon: Path: /Library/StartupItems/AgentMon
Startup items are obsolete in OS X Yosemite
Problem System Launch Daemons: ℹ️
[failed] com.apple.Kerberos.digest-service.plist [Details]
Launch Agents: ℹ️
[invalid?] com.bomgar.bomgar-scc-sdcust-login-drone-1297813022.plist [Support]
[running] com.epson.epw.agent.plist [Support]
[loaded] com.kaseya.kaseyaremotecontrol.plist [Support]
[invalid?] com.kaseya.update.plist [Support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[running] com.crashplan.engine.plist [Support]
[not loaded] com.econtechnologies.ChronoAgentRemote.plist [Support]
[running] com.kaseya.agentmon.plist [Support]
[loaded] com.microsoft.office.licensing.helper.plist [Support]
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist [Support]
[invalid?] com.citrixonline.GoToMeeting.G2MUpdate.plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[not loaded] com.marketcircle.daylite.dlbackuppersonal.plist [Support]
[loaded] com.marketcircle.daylite.pidclear.plist [Support]
User Login Items: ℹ️
GrowlMenu Application (/Library/PreferencePanes/Growl.prefPane/Contents/Resources/GrowlMenu.app)
System Events Application (/System/Library/CoreServices/System Events.app)
Microsoft AU Daemon Application (/Applications/Microsoft AutoUpdate.app/Contents/MacOS/Microsoft AU Daemon.app)
Dropbox Application (/Applications/Dropbox.app)
CrashPlan menu bar Application (/Applications/CrashPlan.app/Contents/Resources/CrashPlan menu bar.app)
JLA Share Volume Hidden (/Volumes/JLA Share)
XPSLauncher Application (/Applications/Xerox/PrintingScout/XPSLauncher.app)
KUsrTsk Application (/Applications/KUsrTsk.app)
Internet Plug-ins: ℹ️
FlashPlayer-10.6: Version: 16.0.0.257 - SDK 10.6 [Support]
QuickTime Plugin: Version: 7.7.3
Flash Player: Version: 16.0.0.257 - SDK 10.6 [Support]
CANONiMAGEGATEWAYDL: Version: 3.1.0.2 [Support]
Default Browser: Version: 600 - SDK 10.10
OfficeLiveBrowserPlugin: Version: 12.3.6 [Support]
Scorch: Version: Unknown - SDK 10.2 [Support]
SharePointBrowserPlugin: Version: 14.3.7 - SDK 10.6 [Support]
Silverlight: Version: 5.1.20913.0 - SDK 10.6 [Support]
iPhotoPhotocast: Version: 7.0
User internet Plug-ins: ℹ️
CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Support]
WebEx64: Version: 1.0 [Support]
3rd Party Preference Panes: ℹ️
ChronoAgent [Support]
Flash Player [Support]
Growl [Support]
StuffIt AVR [Support]
Time Machine: ℹ️
Skip System Files: YES - System files not being backed up
Mobile backups: OFF
Auto backup: YES
Volumes being backed up:
JLA 21: Disk size: 999.35 GB Disk used: 473.29 GB
Destinations:
backup [Local]
Total size: 2.00 TB
Total number of backups: 51
Oldest backup: 2014-10-23 08:25:19 +0000
Last backup: 2015-01-14 23:09:00 +0000
Size of backup disk: Adequate
Backup size 2.00 TB > (Disk used 473.29 GB X 3)
Top Processes by CPU: ℹ️
      26% kextcache
      3% CrashPlanService
      2% WindowServer
      0% systemmigrationd
      0% fontd
Top Processes by Memory: ℹ️
258 MB kextcache
180 MB Mail
172 MB CalendarAgent
155 MB Safari
112 MB CrashPlanService
Virtual Memory Information: ℹ️
3.55 GB Free RAM
3.19 GB Active RAM
838 MB Inactive RAM
1.01 GB Wired RAM
2.09 GB Page-ins
0 B Page-outs
Diagnostics Information: ℹ️
Jan 21, 2015, 02:37:26 PM /Users/[redacted]/Library/Logs/DiagnosticReports/Finder_2015-01-21-143726_[reda cted].crash
Jan 21, 2015, 02:16:34 PM Self test - passed

When the slowness is especially bad, note the exact time: hour, minute, second.
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 and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above.
Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first.
Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.

What would make a PC decide that an SBS self-signed root certificate is revoked because it cannot contact the CRL distribution point?

I'm puzzled. Scenario is SBS 2008 with some web applications published to the internet over https. Users who access these have the SBSCertificate.cer (expiry 2018) installed in the Trusted Root Certificates store for their local PC. This used to work
fine, and in fact it still works fine for me, from my own non-domain joined PC connecting over the internet. However some users are now getting a "certificate revoked" error and cannot connect to the applications. Using Certificate Manager on these
client PCs, the properties for this certificate state that it is revoked. It is not in fact revoked, but the CRL is on a local network that is inaccessible from outside (no VPN). Why is this certificate accepted as OK by some external PCs, but not by others,
what is the setting that determines this?
Tim

Hi Tim,
Based on your description, would you please let me confirm something more?
1. "However some users are now getting a "certificate revoked" error and cannot connect to the applications."
Please let me know the complete error message.
2. Based on your description, I understand that this issue just occurred in some client computers. Other computers still run as normal. Would you please compare some configurations
of the problematic computer with a good one? Any update, please feel free to let me know.
Please refer to the following KB and articles and check if can help you.
IIS returns HTTP "403.13 Client Certificate Revoked"
error message although certificate is not revoked
Understanding
Certificate Revocation Checks
How Certificate Revocation Works
Hope this helps.
Best regards,
Justin Gu

What would make my iTouch have issues with connecting to wifi?

It has been working fine all over the house, but now I am confined to 5 feet near the router. This problem happens in multiple areas, where a laptop can connect fine. I've done both hard and soft resets. I have not restored the iPod back to factory settings, adn I'm hoping that I do not have to.
This problem surfaced quite literally overnight.

No reason this shouldn't work.
Give each AppleTv a different name under Settings in case this confuses itunes, but if it's not connected to the router in the first place that won't help.
I would suggest:
1 - restarting router and powering off/repowering AppleTV
2 - if still not working replace working AppleTV with non-working one to check if it's a location related issue due to poor wi-fi signal. If still not working maybe it's faulty.
AC

HT4623 My iPad is losing its charge very quickly, what would make this happen. My pad is only about 6 months old

My iPad is losing its charge more quickly than before. Why would that happen? It is less than a year old

Hello Debby Mc,
We've an article that provides useful tips and information that can help extend the life of your iPad's battery.
iPad: Charging the battery
http://support.apple.com/kb/HT4060
Cheers,
Allen

What would make an email received show a bunch or A s in boxes? Gerald's is doing this but mine gets the same email and it all shows up.

In Mail 6.3 on 15" Macbook pro, an email received show a bunch of A's in square boxes. On an Identical Laptop, everything shows up fine. I cant find any configuration differences, but I may not know where to look. Any help out there?

These symbols are from Apple's Last Resort font, and indicate that a major problem has arisen with the OS's ability to use the basic system fonts.Boot up cmd-r and re-install OS X, This will be an install in place and should not effect any of your own files.
EDIT: But if it's only happening on one email and not throughout the system, it may be the email that was sent, itself having a font that can't be read.

HT201413 How can I tell when i have to restart to factory ? What would make it happen to do this ?

I was all working fine ...then about a week ago it showed a iTunes Circle with the arrow pointing up tto it I hope i didnt loose all if mu info ....I really need the pics and other things ...Could someone have done somehing to it ? Like hru Windows. Internet Emploer , Microsoft ...ect. ?? Please help me ...I am a a loss ...I am jus reading ur article on APPLE now ....Jus wonder if someone else coulg do this to me > TY <3

Put the message in the Trash and then empty the Trash.

What would make my iMac start to smoke?

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