Does this shelf fit my iMac 27 inch late 2012

Hi,
Does the Twelve South BackPack 2 Adjustable Shelf fit my imac 27 inch late 2012?
I just ordered one from apple just now and noticed afterwards (should have read it all first) that it said not compatible with imac (fall 2012) models.
Is that me? I bought the imac in January 2013, it's the new slim model. Should I cancel the order or will it fit. I wanted it to hold the USB Superdrive out of sight?
Thanks, Crankyhead.

Best Buy carries that item (at least in this area) and they also have the iMacs, so I'd suggest going there and checking it out.
FWIW, there is no 2013 model iMac; anything sold at this time is the late/fall 2012 model. As for whether it fits or not - I don't have a late 2012; I bought a backpack for my mid 2010 and did not care for it (didn't appear to be solid enough to hold a hard drive which is probably heavier than a superdrive), so I returned it.

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You use Target Display Mode via Thunderbolt cable.
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IMac (27-inch, Late 2012) i want to put ssd blade

iMac (27-inch, Late 2012)
3,2 GHz Intel Core i5
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Hello I want to put SSD blade in my iMAC 27 , maybe someone of you know where to find the ssd blade finishing dig up the entire Internet , but do not understand , really that ssd . Suitable for MacBook Pro and MacBook in 2013 and also 2012? I planned put 512GB max 256GB Help me !!

The SSD blade drive is a very thin SSD that looks a lot like a memory module. It connects to a PCie slot instead of an HD sata port.
According to EveryMacs overview:
For storage upgrades, if the 21.5-Inch "Late 2012" iMac models were not configured with an SSD or a "Fusion Drive" at the time of purchase, there is no way to add a PCIe-based "blade" SSD later as the needed connector is not present. However, the 27-Inch "Late 2012" and all "Late 2013" iMac models do have this connector on the motherboard even without a pre-installed SSD, so it is possible to add a PCIe-based "blade" SSD after the purchase of the system.
http://www.everymac.com/systems/apple/imac/imac-aluminum-tapered-edge-faq/differ ences-between-imac-aluminum-late-2012-late-2013-models.html
One of these should work:
http://www.newegg.com/Product/ProductList.aspx?Submit=Property&N=100008120%20600 038516%20600038517%20600038515%20600489717%20600171532%20600171533%20600488413&I sNodeId=1&name=M.2
With that said you will have to completely disassemble the iMac to install an SSD blade in it. That means not only removing screws, but also glue, and other securing mechanisms, not easily removed.

Why does my fan blast full power after shutdown?3.4 GHz Intel Core i7/OS X 10.9/27-inch, Late 2012

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A couple of seconds after shutdown my fan at the rear of the machine starts. and does not stop until I unplug power at the socket. The fan is almost as loud as a bathroom hand dryer..... Yup !? Any one out ther with any ideas please help. Mac support were sweet but pretty ineffectual.
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Windows 7 failing to install through bootcamp on iMac 27" late 2012

Hello.
I have recently received my brand new iMac 27" late 2012, and am trying to get it to install windows 7.
My machine is running 10.8.4 with a 3.4 GHz Intel Core i7, 16 GB DDR3 RAM and 500GB SSD drive.
I launched bootcamp and went through the usual bootcamp standard steps, and after it partitions and restarts, the windows installation stops at the point of choosing a partition.
To elaborate, after the windows setup starts, and I click install windows, it asks me to choose a partition. It happens to be Partition 4 BOOTCAMP (the one that bootcamp supposedly prepared for windows as an NTFS partition.
It does not recognize it as NTFS. I click on advanced options and click format, but it takes a split second and never really formats. The only thing that changes at this point is the name of the Partition (the word BOOTCAMP disappears from the partition name). Another thing I tried after reading full threads for 4 days straight is that I click delete to delete the partition, then on the now unallocated space partition, I click *New to reallocate/format the partition. It also takes no time to turn this into a partition supposedly ready for windows, but it never allows me to choose it and go next to start installation.
I have done this about 8 times now and I am starting to worry about damaging my SSD because of all the partitioning and unpartitioning.
Here are a list of things I have done:
1. made an ISO image of the windows 7 (64 bit of course) and ran that on a USB
2. downloaded the ISO image from the microsoft website and ran that on a USB
3. used an exernal optical drive to run the windows setup using the windows installation DVD instead of the USB ISO image.
I have made sure everything is fully updated, had a friend install windows on his macbookpro retina with an SSD running the same OSX and it worked just fine.
*a small note that may or may not be of importance is that when in the list of partitions in the windows installation I click on Load Driver, it does not detect any drivers although the USB with the drivers that BOOTCAMP created earlier on the Mac side is inserted in the machine and detectable.
What is it that I'm missing?

SOLVED IT!
after 5 full days of research and trial and error (only error and no progress) and after I had hit almost every wall there is, I thought of reviewing all the elements that make up the set up.
1. iMac
2. windows 7 installation (i had both optical drive for the dvd as well as an image on a USB)
3. usb stick with the drivers on it.
the iMac i trust.
windows i doubted. so i went ahead and checked the format of the usb on which i had the drivers. weirdly enough, both were exFat, which is created by windows - supposedly.
I decided to change the format of the USB with the drivers on it to FAT. re-downloaded the drivers on it and restarted... and it worked !
Although it does not make sense at all, but windows was reading from the image on one USB which was exFat, but was not reading the drivers on the other USB.
My guess is that the reason is the Mac OSX was reading the windows through the exFat and that was working, but the windows was not being able to read its own format on the other USB. Typical windows weirdness.
In any case, I hope if someone has the same kind of trouble they would be able to benefit from this post.
Also, maybe its worth noting in the instructions of BOOTCAMP.
Thanks for those who took the time to read it.
b.

IMac 27" (Late 2012) Freezing and Crashing

I purchased an ex-demo iMac 27" (Late 2012 - 3.4Ghz, 3TB Fusion Drive, Nvidia 680MX 2GB) that was upgraded to 32GB Ram last July.
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Anyone have any ideas of what else I could try?
Thanks,
James

1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve your problem.
2. If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
3. Below are instructions to run a UNIX shell script, a type of program. All it does is to gather information about the state of your computer. That information goes nowhere unless you choose to share it on this page. However, you should be cautious about running any kind of program (not just a shell script) at the request of a stranger on a public message board. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them.
Here's a summary of what you need to do: Copy a line of text from this web page into the window of another application. Wait for the script to run. It usually takes a couple of minutes. Then paste the results, which will have been copied automatically, back into a reply on this page. The sequence is: copy, paste, wait, paste again. Details follow.
4. You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
5. If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply.
6. The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in your browser, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
Triple-click anywhere in the line of text below on this page to select it:
PATH=/usr/bin:/bin:/usr/sbin:/sbin; clear; Fb='%s\n\t(%s)\n'; Fm='\n%s:\n\n%s\n'; Fs='\n%s: %s\n'; Fu='user %s%%, system %s%%'; PB="/usr/libexec/PlistBuddy -c Print"; A () { [[ a -eq 0 ]]; }; M () { find -L "$d" -type f | while read f; do file -b "$f" | egrep -q XML\|exec && echo $f; done; }; Pc () { o=`egrep -v '^[[:blank:]]*($|#)' "$2"`; Pm "$1"; }; Pm () { [[ "$o" ]] && o=`sed 's/^ */ /' <<< "$o"` && printf "$Fm" "$1" "$o"; }; Pp () { o=`$PB "$2" | awk -F'= ' \/$3'/{print $2}'`; Pm "$1"; }; Ps () { o=`echo $o`; [[ ! "$o" =~ ^0?$ ]] && printf "$Fs" "$1" "$o"; }; R () { o=; [[ r -eq 0 ]]; }; SP () { system_profiler SP${1}DataType; }; id | grep -qw '80(admin)'; a=$?; A && sudo true; r=$?; t=`date +%s`; clear; { A || echo $'No admin access\n'; A && ! R && echo $'No root access\n'; SP Software | sed '8!d;s/^ *//'; o=`SP Hardware | awk '/Mem/{print $2}'`; o=$((o<4?o:0)); Ps "Memory (GB)"; o=`SP Diagnostics | sed '5,6!d'`; [[ "$o" =~ Pass ]] || Pm "POST"; o=`SP USB | awk '/:$/{d[++n]=$0}; /M.*: /{split($0,a,":"); m[n]=a[2]} END {for (i in m) {if (m[i] !~ /^ Apple/) print d[i] m[i]}}'`; Pm "USB"; o=`pmset -g therm | sed 's/^.*CP/CP/'`; egrep -q 'No th|pms' <<< "$o" && o=; Pm "Thermal conditions"; o=`pmset -g sysload | grep -v :`; grep -q '= [^GO]' <<< "$o" || o=; Pm "System load advisory"; o=`nvram boot-args | awk '{$1=""; print}'`; Ps "boot-args"; d=(/ ""); D=(System User); for i in 0 1; do o=`cd ${d[$i]}L*/L*/Dia* && ls | awk -F_ '!/ag$/{$NF=a[split($NF,a,".")]; print}' | tail`; Pm "${D[$i]} diagnostics"; done; o=`syslog -F bsd -k Sender kernel -k Message CReq 'GPU |hfs: Ru|I/O e|n Cause: -|NVDA\(|pagin|SATA W|ssert|timed? ?o' | tail -n25 | awk '/:/{$4=""; $5=""; print}'`; Pm "Kernel messages"; o=`df -m / | awk 'NR==2 {print $4}'`; o=$((o<5120?o:0)); Ps "Free space (MiB)"; o=$(($(vm_stat | awk '/eo/{sub("\\.",""); print $2}')/256)); o=$((o>=1024?o:0)); Ps "Pageouts (MiB)"; s=( `sar -u 1 10 | sed '$!d'` ); [[ s[4] -lt 85 ]] && o=`printf "$Fu" ${s[1]} ${s[3]}` || o=; Ps "Total CPU usage" && { s=(`ps acrx -o comm,ruid,%cpu | sed '2!d'`); o=${s[2]}%; Ps "CPU usage by process \"$s\" with UID ${s[1]}"; }; s=(`top -R -l1 -n1 -o prt -stats command,uid,prt | sed '$!d'`); s[2]=${s[2]%[+-]}; o=$((s[2]>=25000?s[2]:0)); Ps "Mach ports used by process \"$s\" with UID ${s[1]}"; o=`kextstat -kl | grep -v com\\.apple | cut -c53- | cut -d\< -f1`; Pm "Loaded extrinsic kernel extensions"; R && o=`sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|calendarse|cups|dove|isc|ntp|post[fg]|x)/{print $3}'`; Pm "Extrinsic system jobs"; o=`launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)|\.[0-9]+$/{print $3}'`; Pm "Extrinsic agents"; o=`for d in {/,}L*/Lau*; do M; done | grep -v com\.apple\.CSConfig | while read f; do ID=$($PB\ :Label "$f") || ID="No job label"; printf "$Fb" "$f" "$ID"; done`; Pm "launchd items"; o=`for d in /{S*/,}L*/Star*; do M; done`; Pm "Startup items"; o=`find -L /S*/L*/E* {/,}L*/{A*d,Compon,Ex,In,Keyb,Mail,P*P,Qu,Scripti,Servi,Spo}* -type d -name Contents -prune | while read d; do ID=$($PB\ :CFBundleIdentifier "$d/Info.plist") || ID="No bundle ID"; egrep -qv "^com\.apple\.[^x]|Accusys|ArcMSR|ATTO|HDPro|HighPoint|driver\.stex|hp-fax|\.hpio|JMicron|microsoft\.MDI|print|SoftRAID" <<< $ID && printf "$Fb" "${d%/Contents}" "$ID"; done`; Pm "Extrinsic loadable bundles"; o=`find -L /u*/{,*/}lib -type f | while read f; do file -b "$f" | grep -qw shared && ! codesign -v "$f" && echo $f; done`; Pm "Unsigned shared libraries"; o=`launchctl getenv DYLD_INSERT_LIBRARIES`; Pm "Inserted libraries"; o=`find -L {,/u*/lo*}/e*/periodic -type f -mtime -10d`; Pm "Modified periodic scripts"; o=`scutil --proxy | grep Prox`; Pm "Proxies"; o=`scutil --dns | awk '/r\[0\] /{if ($NF !~ /^1(0|72\.(1[6-9]|2[0-9]|3[0-1])|92\.168)\./) print $NF; exit}'`; Ps "DNS"; R && o=`sudo profiles -P | grep : | wc -l`; Ps "Profiles"; for f in fstab sysctl.conf crontab launchd.conf; do Pc $f /etc/$f; done; Pc "hosts" <(grep -v 'host *$' /etc/hosts); Pc "User launchd" ~/.launchd*; R && Pc "Root crontab" <(sudo crontab -l); Pc "User crontab" <(crontab -l); R && o=`sudo defaults read com.apple.loginwindow LoginHook`; Pm "Login hook"; Pp "Global login items" /L*/P*/loginw* Path; Pp "User login items" L*/P*/*loginit* Name; Pp "Safari extensions" L*/Saf*/*/E*.plist Bundle | sed 's/\..*$//;s/-[1-9]$//'; o=`find ~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $ | wc -l`; Ps "Restricted user files"; cd; o=`SP Fonts | egrep "Valid: N|Duplicate: Y" | wc -l`; Ps "Font problems"; o=`find L*/{Con,Pref}* -type f ! -size 0 -name *.plist | while read f; do plutil -s "$f" >&- || echo $f; done`; Pm "Bad plists"; d=(Desktop L*/Keyc*); n=(20 7); for i in 0 1; do o=`find "${d[$i]}" -type f -maxdepth 1 | wc -l`; o=$((o<=n[$i]?0:o)); Ps "${d[$i]##*/} file count"; done; o=$((`date +%s`-t)); Ps "Elapsed time (s)"; } 2>/dev/null | pbcopy; exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
7. Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign ($) or a percent sign (%). If you get the percent sign, enter
exec sh
in the window and press return. You should then get a new line ending in a dollar sign.
Click anywhere in the Terminal window and paste (command-V). The text you pasted should vanish immediately. If it doesn't, press the return key.
If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important. If you don't know your password, or if you prefer not to enter it, just press return three times at the password prompt.
If you're not logged in as an administrator, you won't be prompted for your password. The test will still run. It just won't do anything that takes administrator privileges.
The test may take up to a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, there will be nothing in the Terminal window and no indication of progress. Wait for the line "[Process completed]" to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report your results. No harm will be done.
8. When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
When you post the results, you might see the message, "You have included content in your post that is not permitted." It means that the forum software has misidentified something in the post as a violation of the rules. If it happens, please post the test results on Pastebin, then post a link here to the page you created.
Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Terms of Use of Apple Support Communities ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

How can I install windows 7 on imac 27 late 2012

I wanted to install windows 7 64 bit on a iMac 27 inch late 2012. Everything went smooth until it restarts. Then I get the following message.
Non-system disk
Press any key to reboot.
After this, there is no reaction. By the way, I don't have Fusion Drive. I have normal SATA drive.

Hey Guys,
I was able to start boot manager. I had 4 options:
1. Macintosh HD
2. Recovery-10.8.2
3. Windows
4. EFI Boot
I choose option 3 (Windows). But i got the following message.
CDBOOT: Couldn't find BOOTMGR
Any idea?

How do I upgrade (via Apple) SSD (to 500 GB or 1 TB) on Macbook Pro Retina 13-inch, Late 2012

How do I upgrade (via Apple) SSD (to 500 GB or 1 TB) on Macbook Pro Retina 13-inch, Late 2012.
I want to know how much Apple will charge for this (if they even do this since I don't see it on their website).

Apple does not upgrade parts of a machine - they'll have it repaired under warranty, but no upgrades. You can, however, take it to an authorized service provider; no idea how much they would charge.
You can also do this yourself - here is an installation video:
http://eshop.macsales.com/installvideos/macbookpro_13_retinadisplay_late12_unibo dy_ssd/
I bought one of their SSDs and installed it in my 2012 MBP (not retina) - very easy to do. If you want to go this way, post back for instructions on how to clone your current drive which will make things super easy.

IMac 27" late 2012 hard to sleep : start using on August it is easy to sleep but just few days ago ,it take half a minute to start sleep .

iMac 27" late 2012 hard to sleep :
- I start use this brand new iMac from August 2013 ,it is easy and quickly to sleep . Just few day ago it takes half a minute to sleep .
At same time the old iMac 20" 2007 got same problem .
Please help me to know what happen.
Thanks to our Apple Support Communities,
Garmin 108

Same problem here - only with a 2012 Macbook Air running 10.8.2
(very accurately described above )
After MBA sleeps and you try to wake it up, screen does not refresh properly and only refreshes where the current mouse cursor is.
If you close the lid, and then re-open the MBA then functions correctly.
I also have an issue where the MBA will suddenly crash while asleep and then will require a hard reset.
Not sure if related though.
I just reset smc/pram - will report back if this does not solve the issue.
If you don't hear from me again, then reseting solved it!

IMac 27" late 2012 3TB hard drive bad blocks

Hi Guys,
I just received the new iMac 27" late 2012 with 3TB hard drive and as soon as I run Drive Genius version 3.2.2 I saw that the drive has 8 bad blocks.
I tried to deleted the logical volume and reinstall the OS X 10.8.2 and after a scan I got the same 8 bad blocks. I give it another try and erase the entire 3 TB volu except the recovery partition and installed Mountain Lion and after running another Drive Genius SCAN for almost 12 hours I got 8 bad blocks again.
Called Apple Support and they are clueless about what is going on as they are not even aware that the late 2012 iMac 27" is not even in stores yet.
I was told that as long as I do not have errors within the OS X I should not worry about as he HDD is fine. I do not believe it since from my experience when you have a bad block you also have a physical damage on you disk surface.
I called Apple Support again and I was told to go to Genius Bar and have them to replace the HDD to a unit not even a week old. I think that I am going to return the unit, maybe I got a lemon and the unit got dropped during the shipping process or who knows.
I hope that this thread will help other owners to have them to run a check disk or scan disk just to make sure that they do not have a bad hard drive on their new iMac late 2012.
Again I have nothing against to anyone as I just hope that someone from Apple will find this thread and try to prevent this from happening to a large scale.
Thank you.

Colos2012 wrote:
... soon as I run Drive Genius version 3.2.2 I saw that the drive has 8 bad blocks.
Drive Genius will report bad blocks when none are present. It may even be responsible for disk corruption.
See: DriveGenius = Problem
Get rid of Drive Genius. Do not install such junk on a Mac.

IMac 27" late 2012 + new Apple TV 3: bluetooth disconnections

Hello,
I have an iMac 27" late 2012 working perfectly with wireless keyboard, magic mouse, and wireless trackpad until two days ago, when I purchased the Apple TV.
Since then I have continous disconnections whith Mavericks. Mouse, Keyboard and Pad lost connection and a few seconds later reconnects.
Just this post is impossibly to write, but with patiente....
Just note that when working with Apple TV in standby, with white led off, I have no problems like ever.
If I push any remote button power on Apple TV then automatically Mavericks starts in infinite loop to disconnect (the 3) and connect again.
Then put in stand by Apple TV and then all thing go fine again.
Note that when working with W7 with Bootcamp no errors, no disconnections, anything... All OK.
By this reason I think that the issue is located in OSX Mavericks, not related to the new ecosystem with Apple TV.
Obviously anything isn't going right with Apple TV, but still thinking that it is working OK.
Any idea? how can I check error logs in Mavericks?
The iMac is under Applecare covering, and the Apple TV is new, 2 days old.
Best regards.

Thanks for your fast reply!!!
I think that I have found what was shutting down Bluetooth on iMac.
I installed 2 or 3 weeks ago NotifyR on iMac to get notifies when received in iPhone.
I have opened console at iMac and I have seen that continously was looking for devices and when found Apple TV, with Bluetooth panel opened I saw that shutted down.
First of all I have put in OFF NotifyR. All has become normal. No disconnections of anything and no shutdown in general of Bluetooth.
I have sure at 99,99% that this was the problem. I will have it in quarantine...
I will remove NotifyR waiting for new capabilities of Yosemite!.
Thanks again. I hope that if someone have the same combination will help him.

Graphical artifacts with DX11 (and OGL4) on imac 27" late 2012 GTX 675 MX

Hello, dear community! I have the imac 27" late 2012 with graphical card GTX 675 MX.
In Mac OS X 10.8.5 all works perfect. Software, games (Bioshock Infinity), benchmarks (heaven 4.0). But in windows...
I was installed Windows 8, then 7, then 8 again, and every time after installing nvidia drivers (with BootCamp, or manually downloaded from nvidia site) i have some graphical artifacts ("||" randomly on the screen). On win 7 it was only in games (like Bioshock Infinity or Tomb Raider), on win 8.1 everywhere(on desktop and in games). In DX9 games (like World Of Tanks) all perfect, in DX10/11 games (BI or TR) - artifacts. After thousend of tests i run Heaven Unigine 4.0 with OpenGL(other settings the same) in macos and in windows(on 7 and on 8), for checking some hardware issue if it exists. But on mac os x, as i already said, all is perfect, but on windows - randomly appers artifacts.
I record a video to illustrate my problem. http://www.youtube.com/watch?v=AwEog66vfFk&feature=youtu.be
Help me please! People in service told me that this is not a guarantee issue

I assume you have GPU-Z and other tools to look at gpu. the imac falls between notebooks and desktops when it comes to graphics. and it may be some programs just are not written for that graphic device? possibly?
I've been on Windows 8.1 mostly along with 8.0 and graphic drivers have been "bumpy road" at times and I was able to swap out and use different graphic cards on my PC - had me thinking I had an SSD related issue, then replaced memory (those were bad it turned out, and could have caused drivers and system errors).
Windows has memtest on the DVD and I have seen one or three people with real problems that did not show up until they did more tests, even though Mac OS was blindly oblivious to anything being wrong (it was, they upgraded RAM and SO-DIMM was not fully seated in one case, in another the RAM module had to be replaced).
Extended Tests using Apple Hardware Test is not conclusve and almost never ever when comes to finding gpu or memory 'errors.' There you are better with Windows test utility.

IMac 27" (late 2012) having graphics issues

I am unable to run any application or game that makes use advanced graphics. A few examples:
Diablo, WoW, Skyrim, ESO all will load and crash after less than 10 seconds. All the while there are rendering erros shooting solid color triangles around the screen.
Maps will constantly flicker small random patches of the map.
Safari is having trouble with the fonts. IT will stretch out the letters and keep them displaying that way even while scrolling.
I have done everything I know to do.
Updated to maverick 10.9.3
repaired permissions
reset Pram
booted in safe mode
Ran the hardware check for 1.5 hours and got no errors
In an attempt to make sure it wasnt the physical display Mirrored to apple tv, all flickering was shown there as well.
Here are my imacs specs:
iMac 13,2
Intel core i7, 3.4 ghz
16 gb
Nvidea GeForce GTX 680MX,PCIe, 2048 MB
Any help and advice would be greatly appreciated.

EtreCheck version: 1.9.11 (43) - report generated June 7, 2014 at 11:42:28 AM CDT
Hardware Information:
          iMac (27-inch, Late 2012)
          iMac - model: iMac13,2
          1 3.4 GHz Intel Core i7 CPU: 4 cores
          16 GB RAM
Video Information:
          NVIDIA GeForce GTX 680MX - VRAM: 2048 MB
System Software:
          OS X 10.9.3 (13D65) - Uptime: 0 days 2:17:10
Disk Information:
          APPLE HDD WDC WD10EALX-408EA0 disk1 : (1 TB)
                    EFI (disk1s1) <not mounted>: 209.7 MB
                    disk1s2 (disk1s2) <not mounted>: 999.35 GB
                    Recovery HD (disk1s3) <not mounted>: 650 MB
          APPLE SSD SM128E disk0 : (121.33 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    disk0s2 (disk0s2) <not mounted>: 120.99 GB
                    Boot OS X (disk0s3) <not mounted>: 134.2 MB
USB Information:
          Western Digital My Book 1140 3 TB
                    EFI (disk3s1) <not mounted>: 314.6 MB
                    My Book (disk3s2) /Volumes/My Book: 3 TB (2.23 TB free)
          Logitech USB Receiver
          Razer Razer Naga Epic
          Apple Inc. iPhone
          Apple Inc. FaceTime HD Camera (Built-in)
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Gatekeeper:
          Mac App Store and identified developers
Kernel Extensions:
          [not loaded] com.Creative.driver.THXTruStudioPCUSBAudioPlugin (1.2.3) Support
          [not loaded] com.Creative.driver.THXTruStudioPCUSBAudioPlugin64 (1.2.3) Support
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist Support
          [loaded] com.microsoft.office.licensing.helper.plist Support
Launch Agents:
          [loaded] com.citrix.AuthManager_Mac.plist Support
          [running] com.citrix.ReceiverHelper.plist Support
          [running] com.citrix.ServiceRecords.plist Support
          [running] com.creative.thxtrustudiopc.plist Support
User Launch Agents:
          [running] com.spotify.webhelper.plist Support
User Login Items:
          iTunesHelper
          Spotify
          BitTorrent
          Dropbox
Internet Plug-ins:
          FlashPlayer-10.6: Version: 13.0.0.214 - SDK 10.6 Support
          QuickTime Plugin: Version: 7.7.3
          Flash Player: Version: 13.0.0.214 - SDK 10.6 Support
          GameTreeDM_NPAPI: Version: 1.11 - SDK 10.6 Support
          Default Browser: Version: 537 - SDK 10.9
          CitrixICAClientPlugIn: Version: 11.8.2 - SDK 10.7 Support
          SharePointBrowserPlugin: Version: 14.1.0 Support
          Silverlight: Version: 5.1.30214.0 - SDK 10.6 Support
          GameTreeDM: Version: 1.4 - SDK 10.5 Support
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 2.0 - SDK 10.9
          AppleAVBAudio: Version: 203.2 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
          Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User Internet Plug-ins:
          WebEx64: Version: 1.0 - SDK 10.6 Support
3rd Party Preference Panes:
          Flash Player Support
Time Machine:
          Auto backup: YES
          Volumes being backed up:
          Destinations:
                    My Book [Local] (Last used)
                    Total size: 3
                    Total number of backups: 73
                    Oldest backup: 2013-06-01 19:17:43 +0000
                    Last backup: 2014-06-07 16:01:13 +0000
                    Size of backup disk: Excellent
                              Backup size 3 > (Disk size 0 B X 3)
          Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
Top Processes by CPU:
              10%          mds_stores
               6%          iTunes
               4%          Agent
               3%          WindowServer
               2%          Blizzard Launcher
Top Processes by Memory:
          541 MB          iTunes
          197 MB          Agent
          197 MB          com.apple.MediaLibraryService
          197 MB          com.apple.WebKit.WebContent
          197 MB          Safari
Virtual Memory Information:
          1.45 GB          Free RAM
          4.91 GB          Active RAM
          8.55 GB          Inactive RAM
          1.09 GB          Wired RAM
          810 MB          Page-ins
          0 B          Page-outs

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How do you adjust the bass in the iMac 27" (late 2012)?
I am watching Youtube and the bass is very distrubing. Isn't there a way to adjust this on an iMac OSX?

AFAIK, you can't with the internal speakers. Contact Apple's Support, formerly Apple Express Lane, and see what they say.

Replacement screen for imac 27" late 2012

My new late 2012 27" imac has a scratch. Is it possible to replace the glass?

My cat pushed my late 2012 27 iMac off the desk and it fell on the floor. When I pulled it back up I gasped with horror. Although the LCD survived, the screen cover is cracked and the metal in the back bent a littlebit.
I have Apple care but obviously it woudn't cover the costs.
I took it to Apple and here is a quote for the repair: (I'm in the UK)
661-7169
Display Panel, LCD, (27-inch Late 2012)
£ 375.00
£ 375.00
923-0522
Housing, Rear
£ 250.00
£ 250.00
S1490LL/A
Hardware Repair Labor
£ 24.00
£ 24.00
VAT
£ 129.80
Total
£ 649.00
£ 778.80
luckily I have accidental insurance, therefore the cat is still alive.

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