After install maverick i dont have sound at all

help me please i try all (reset the pram ,sms,delete som audio files etc etc) but i cant fix it,guess is not a hardware problem because i can hear the chan at the beggining,the itunes works fine but i cant hear nothing.!..and either i cant back to M.lion because i didnt use the time machine ...this is what i got at the panel control seems is all fine but still without sound..maybe i have to install some drivers? i have a macbook white 13 inch mid 2009...help me please i used my mac for work...

thanks for ur attention paul_31...but i got another question, wich software or driver sound (dont know how called) woul be the right to install? maybe this info can help
thank for your help paul_31, I'm starting to disappoint apple (guess life was easy when i had windows u.u )

Similar Messages

Has anyone else's 'Macintosh HD' folder disappeared after installing Mavericks? OR have I missed a trick somewhere?

I've just downloaded Mavericks, and the Macintosh HD folder seems to have vanished. Has this happened to anyone else? Was this a planned change from Apple? Has it just be relocated somewhere else?

Disapeared from where?
If the Desktop, then Finder->Preferences->General and check the box: Hard Disks

My ImageClass MF4380dn Cannon Multifunction Copier driver no longer works after installing Mavericks. How can I resolve this?

My Image Class MF4380dn Cannon Multifunction Copier driver no longer works after installing Mavericks. I have checked with Cannon and they do not list my partricular machine among their driver updates. Is there another place to download a driver suitable for Mavericks?

Your MF4380dn is supported by the latest UFR2 v10.4.0 driver that supports 10.9. Here is a link from the Canon Australia web site,
http://support-au.canon.com.au/contents/AU/EN/0100491502.html
Before installing this driver, please remove the MF4380 from Printers & Scanners (unless you have already performed the reset that Carolyn mentions which will remove it for you). Then run the v10.4.0 installer and when it has completed, open Printers & Scanners and add the MF4380.

MacBook Air won't restart after installing Mavericks

My MacBook Air (v Fall 2011) won't restart after installing Mavericks. I have done the instal several times, done the disk repair, I have had 2 visits to the local Apple store where they installed Mavericks with their software only to return home and have it fail again. Does anyone know of issues with the SSD or memory?
Next visit to the Apple store is Tuesday morning 12-17-13. Anywthing that can help us would be appreciated. Tks David

Ok. Nevermind. I guess I had to Force Quit/Relaunch Finder.

IMac goes to sleep/hibernate multiple times per day after installing Maverick OS. I have to shutdown and power back on.

iMac goes to sleep/hibernate multiple times per day after installing Maverick OS. Moving the mouse or hitting the spcaebar will not wake the pc.
I have to shutdown and power back on. My iMac was purchased in January 2011 and no longer in warrenty. The energy saver 'sleep' and 'display' settings are set at 10 minutes. When I changed to 'never' the machine got very hot and I changed the settings back. I have checks by: Put hard disk to sleep when possible and wake for network access. Any help would be greatly appreciated.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

My problem is that after upgrade to IOS 6.1.3 my iphone not sounds! dont have sounds notifications for whatssap, FB, mails and can't listen music and talk with skype without headphones or speakers! only have vibrator and sound for one coming call!! what c

My problem is that after upgrade to IOS 6.1.3 my iphone not sounds! dont have sounds notifications for whatssap, FB, mails and can't listen music and talk with skype without headphones or speakers! only have vibrator and sound for one coming call!! what can i do!???? Thanks a lot for help me!!!!

I have a nearly identical problem with my Ipad 3. Mine is the left channel. I've yet to find help, but have found a number of other posts on this and other forums discussing the issue. People have tried restore, reset etc. Also, cleaning the ports with compressed air or cotton swabs. It appears to be a software issue, but no one is sure.
Along with the original poster, I'd appreciate any help.
As far as the 'level 6' poster, if you're going to be rude, please don't bother. Hope it was just a bad day.

After installing mavericks my computer no longer boots. I had 10.6.8. I've been told I need to zero my hard drive. Is that the same as erasing? Is zeroing absolutely necessary? If u zero will I have any OS at all?

My MacBook is mid 2010 or 2011 and was running 10.6.8. After installing mavericks my computer tries to boot, says it has to restart and that circle goes on and on. Disk utilities says everything is running okay and reinstalling mavericks twice didn't help. I was told my hard drive needs to be zeroed. How is that different from erasing and is it necessary as opposed to erasing? After I back up on an external drive (I know I should have done that before hehe) and erase or zero, what will happen to my operating system? Will I have the ability to reinstall mavericks or do I need to out a copy of it on the external hard drive? I'm wondering this because I don't know if my computer will be running snow leopard or anything at all after I erase or zero since I'm not entirely sure what those terms entail. Thanks for any help!

Ooops.
I upgraded my 10.6.8 system to 10.7.5. ..No problem, but my practice is to connect an ESATA dock to my macpro. install to the drive in the doc, use migration assistant to migrate my data and apps.   use the os in the doc for 2 weeks, if no issue then I delete the OS partiton in my Internal System Drive, do a carbon copy clone to the internal drive.
I just did the similar to upgrade to mavericks.   I installed to a new hardrive in my docking station.   (black widow esata dock). I noticed 10.9.1 is slow stayed with 10.7.5 as my operating system. now and then I would boot 10.9.1 fire up the console utility and fix the issues that made it slow....
Now I am at the "burn in stage" mavericks is now running fast and stable.   I'll use all my apps and if it does not break with the applications I run I will eventaully cc my 10.7.5 OS drive to the docking station, file the drive away.. and take my 10.9.1 drive in the doc and cc it to my internal system drive.
I always wipe out a partion when installing a new OS. Zeroing out is a bit more thorough, you will know if your drive is junk... but it's overkill for me.
I figured repartion is ok.
I'm 2 weeks away from doing a carbon copy clone from my 10.9.1 os drive in my dock to my internal drive.
by the way.. I am running Mavericks on a 8 core macpro 2,1. I have a modified bootloader that has an arbitration layer EFI32 to/from EFI64 emulated.
pretty cool.
And from new system standards, the old macpro stacks up pretty well:

After installing Mountain Lion. Under sound, where it says select an output device, it say no output devices found and there is no sound. How do I fix this? I have reinstalled the os twice and still the same. I have also repaired permissions.

After installing Mountain Lion. No sound. Under sound, where it says select an output device, it says no output devices found, and there is no sound. How do I fix this? I have reinstalled the os twice and still the same. I have also repaired permissions.

Try resetting the PRAM and SMC...
PRAM Reset:
http://support.apple.com/kb/HT1379
SMC Reset:
http://support.apple.com/kb/HT3964
Hope this helps!

After installing "Maverick" update m Epson V300 scanner software does to work anymore. Epson does not seem to have a compatible driver

After installing "Maverick" update my Epson V300 scanner software does not work anymore. Epson does not seem to have a compatible driver (yet?).

It's not just scanners, my WACOM graphic tablet no longer works, am told by WACOM support that Maverick will not recognise it as it is too old!!! Worked perfectly with X 10.8 but not any longer - am well cheesed off as its going to cost me a few bob for a new WACOM!!! Thanks Apple

After installing Mavericks sound...

Am having problems after installed mavericks.
Sound of internal speakers sound noisy, volume has to be at high point and sound very noisy and pops,
and safari is very slow to start. any fixes?
But when i plug to a larger speaker (Bose) no problem.
I had AU Lab and Soundflower and now it is not working, i uninstalled them the problem still the same.

ANY ONE???

My music videos dont have sound after i convert them

ive downloaded some music video's that play fine, but after i convert them in itunes for my ipod they dont have sound
somebody please help!!!

Quicktime or Quicktime Pro (which iTunes uses) don't convert "muxed" ( muxed means multiplexed where the audio and video are stored on the same track) video files properly. It only plays the video and not the audio.
See:iPod plays video but not audio.
You need a 3rd party converter to convert the file with both audio and video.
See this for help: Guide to converting video for iPod (Mac/Windows).

If you have problems with Apple Apps after installing Mavericks

I had a problem with Apple Apps after installing Mavericks. They would bounce in the dock but never open. The problem apps I had trouble with were CALENDAR, MAIL, and even APP STORE. I am guessing it has to do with permissions when setting up via iCloud. Here's what I did to make my apps work again after the update:
Restart computer, then immediately hold down OPTION so you can start from the 10.9 RECOVERY DISK.
Run DISK UTILITY, then run REPAIR DISK, then run REPAIR DISK PERMISIONS.
After this, RESTART, then hold COMMAND OPTION P R at the same time until your computer restarts three times.
After it boots up, the apps began working like they should have.

That's where your questions about Lion should be posted.

After installing Mavericks, my computer is slow/not responding

After installing Mavericks, my computer is not responding and reacting as quickly as (I think) it should. Here are the EtreCheck results. Any help would be much appreciated. Thanks in advance!
Hardware Information:
          iMac (27-inch, Mid 2010)
          iMac - model: iMac11,3
          1 2.93 GHz Intel Core i7 CPU: 4 cores
          16 GB RAM
Video Information:
          ATI Radeon HD 5750 - VRAM: 1024 MB
System Software:
          OS X 10.9.1 (13B42) - Uptime: 0 days 9:55:48
Disk Information:
          Hitachi HDS722020ALA330 disk0 : (2 TB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) /: 2 TB (1.25 TB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
          HL-DT-STDVDRW GA32N
USB Information:
          Apple, Inc. Keyboard Hub
                    Apple, Inc Apple Keyboard
          Apple Inc. Built-in iSight
          Apple Computer, Inc. IR Receiver
          Apple Inc. BRCM2046 Hub
                    Apple Inc. Bluetooth USB Host Controller
          Apple Internal Memory Card Reader
FireWire Information:
          WD My Book 111D 800mbit - 800mbit max
                    disk1s1 (disk1s1) <not mounted>: 32 KB
                    My Book (disk1s3) /Volumes/My Book: 1 TB (30.96 GB free)
Thunderbolt Information:
Kernel Extensions:
          com.kaspersky.kext.klif          (3.0.2d39)
          com.kaspersky.nke          (1.0.2d43)
          com.kaspersky.kext.kimul.44          (44)
Startup Items:
          FanControlDaemon: Path: /Library/StartupItems/FanControlDaemon
Problem System Launch Daemons:
Problem System Launch Agents:
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist 3rd-Party support link
          [loaded] com.adobe.SwitchBoard.plist 3rd-Party support link
          [loaded] com.kaspersky.kav.plist 3rd-Party support link
          [loaded] com.microsoft.office.licensing.helper.plist 3rd-Party support link
          [invalid] com.oracle.java.Helper-Tool.plist
Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link
          [loaded] com.adobe.CS5ServiceManager.plist 3rd-Party support link
          [loaded] com.divx.dms.agent.plist 3rd-Party support link
          [loaded] com.divx.update.agent.plist 3rd-Party support link
          [loaded] com.kaspersky.kav.gui.plist 3rd-Party support link
          [invalid] com.oracle.java.Java-Updater.plist
User Launch Agents:
          [loaded] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link
          [loaded] com.adobe.ARM.[...].plist 3rd-Party support link
          [loaded] com.adobe.ARM.[...].plist 3rd-Party support link
          [loaded] com.facebook.videochat.[redacted].plist 3rd-Party support link
          [loaded] com.google.keystone.agent.plist 3rd-Party support link
User Login Items:
          Scroll Reverser
          Scroll Reverser
          iTunesHelper
          EEventManager
          Dropbox
          AdobeResourceSynchronizer
          EEventManager
          ConnectService
Internet Plug-ins:
          Google Earth Web Plug-in: Version: 6.0 3rd-Party support link
          Default Browser: Version: 537 - SDK 10.9
          OVSHelper: Version: 1.1 3rd-Party support link
          NP_2020Player_WEB: Version: 5.0.94.0 - SDK 10.6 3rd-Party support link
          RealPlayer Plugin: Version: (null) 3rd-Party support link
          AdobePDFViewerNPAPI: Version: 11.0.02 - SDK 10.6 3rd-Party support link
          FlashPlayer-10.6: Version: 11.9.900.170 - SDK 10.6 3rd-Party support link
          Flash Player: Version: 11.9.900.170 - SDK 10.6 3rd-Party support link
          QuickTime Plugin: Version: 7.7.3
          iPhotoPhotocast: Version: 7.0 - SDK 10.8
          NP_2020Player_IKEA: Version: 5.0.94.1 - SDK 10.6 3rd-Party support link
          AdobePDFViewer: Version: 9.5.5 3rd-Party support link
          SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 3rd-Party support link
          JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Outdated! Update
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 1.9 - SDK 10.9
          AppleAVBAudio: Version: 2.0.0 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
User Internet Plug-ins:
          Unity Web Player: Version: UnityPlayer version 2.6.1f3 3rd-Party support link
3rd Party Preference Panes:
          Fan Control 3rd-Party support link
          Flash Player 3rd-Party support link
          Perian 3rd-Party support link
Bad Fonts:
          None
Old Applications:
          /Library/Application Support/Microsoft/MERP2.0
                    Microsoft Error Reporting:          Version: 2.2.9 - SDK 10.4 3rd-Party support link
                    Microsoft Ship Asserts:          Version: 1.1.4 - SDK 10.4 3rd-Party support link
          Solver:          Version: 1.0 - SDK 10.5 3rd-Party support link
                    /Applications/Microsoft Office 2011/Office/Add-Ins/Solver.app
          /Library/Application Support/DivX
                    DivXUpdate:          Version: 1.0 - SDK 10.5 3rd-Party support link
                    DivXMediaServer:          Version: 10.0 - SDK 10.5 3rd-Party support link
                    DivXTransferWizard:          Version: 10.0.0 (Build 10.0.1.41) - SDK 10.5 3rd-Party support link
                    DMSLaunch:          Version: 1.0 - SDK 10.5 3rd-Party support link
          SketchUp:          Version: 8.0 - SDK 10.5 3rd-Party support link
                    /Applications/Google SketchUp 8/SketchUp.app
          /Applications/Microsoft Office 2011/Office
                    Microsoft Graph:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Database Utility:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Office Reminders:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Upload Center:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    My Day:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    SyncServicesAgent:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Open XML for Excel:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Alerts Daemon:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Database Daemon:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Chart Converter:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Clip Gallery:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
          /Applications/Microsoft Office 2011
                    Microsoft PowerPoint:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Excel:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Outlook:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Word:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Document Connection:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
          Microsoft Language Register:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    /Applications/Microsoft Office 2011/Additional Tools/Microsoft Language Register/Microsoft Language Register.app
          Wondershare Helper Compact:          Version: 2.2.3.1 - SDK 10.5 3rd-Party support link
                    /Users/christophermcgreger/Library/Application Support/Helper/Wondershare Helper Compact.app
          Microsoft AutoUpdate:          Version: 2.3.6 - SDK 10.4 3rd-Party support link
                    /Library/Application Support/Microsoft/MAU2.0/Microsoft AutoUpdate.app
          FacebookVideoCalling:          Version: 1.2.0.157 - SDK 10.5 3rd-Party support link
                    /Users/christophermcgreger/Library/Application Support/Facebook/video/1.2.0.158/FacebookVideoCalling.app
          Wondershare AllMyTube:          Version: 3.2.4 - SDK 10.5 3rd-Party support link
                    /Applications/Wondershare AllMyTube/Wondershare AllMyTube.app
Time Machine:
          Skip System Files: NO
          Mobile backups: OFF
          Auto backup: YES
          Volumes being backed up:
                    Macintosh HD: Disk size: 2 Disk used: 696.37 GB
          Destinations:
                    My Book [Local]
                    Total size: 931.36 GB
                    Total number of backups: 51
                    Oldest backup: 2013-07-17 12:40:03 +0000
                    Last backup: 2014-01-05 23:55:06 +0000
                    Size of backup disk: Too small
                              Backup size 931.36 GB < (Disk used 696.37 GB X 3)
                    Data [Network] (Last used)
                    Total size: 3
                    Total number of backups: 53
                    Oldest backup: 2013-07-16 22:38:22 +0000
                    Last backup: 2014-01-05 22:50:13 +0000
                    Size of backup disk: Adequate
                              Backup size 3 > (Disk used 696.37 GB X 3)
          Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
Top Processes by CPU:
              11%          mds
               3%          WindowServer
               2%          diskimages-helper
               1%          EtreCheck
               1%          kav
Top Processes by Memory:
          524 MB          mds_stores
          360 MB          kav
          246 MB          com.apple.IconServicesAgent
          213 MB          com.apple.MediaLibraryService
          164 MB          Finder
Virtual Memory Information:
          10.45 GB          Free RAM
          3.44 GB          Active RAM
          851 MB          Inactive RAM
          1.27 GB          Wired RAM
          918 MB          Page-ins
          0 B          Page-outs

CrassBrauer wrote:
... With the latest software updates for OS X, I've read that anti-virus software is largely superfluous for Mac. Any opinions to the contrary/negative experiences?
Almost. Anti-virus software is completely superfluous for Mac.
I have tested most of the commonly available Mac "anti-virus" products under controlled conditions. The only differences between them are their varying degree of worthlessness. Some are malicious and will corrupt your Mac. The vast majority of Mac problems reported on this site are the direct result of using such products.
OS X already includes everything it needs to protect itself from viruses and malware. Keep it that way with software updates from Apple.
A much better question is "how should I protect my Mac":
Never install any product that claims to "speed up", "clean up", "optimize", or "accelerate" your Mac. Without exception, they will do the opposite.
Never install pirated or "cracked" software, software obtained from dubious websites, or other questionable sources. Illegally obtained software is almost certain to contain malware.
Don’t supply your password in response to a popup window requesting it, unless you know what it is and the reason your credentials are required.
Don’t open email attachments from email addresses that you do not recognize, or click links contained in an email:
Most of these are scams that direct you to fraudulent sites that attempt to convince you to disclose personal information.
Such "phishing" attempts are the 21st century equivalent of a social exploit that has existed since the dawn of civilization. Don’t fall for it.
Apple will never ask you to reveal personal information in an email. If you receive an unexpected email from Apple saying your account will be closed unless you take immediate action, just ignore it. If your iTunes or App Store account becomes disabled for valid reasons, you will know when you try to buy something or log in to this support site, and are unable to.
Don’t install browser extensions unless you understand their purpose. Go to the Safari menu > Preferences > Extensions. If you see any extensions that you do not recognize or understand, simply click the Uninstall button and they will be gone.
Don’t install Java unless you are certain that you need it:
Java, a non-Apple product, is a potential vector for malware. If you are required to use Java, be mindful of that possibility.
Disable Java in Safari > Preferences > Security.
Despite its name JavaScript is unrelated to Java. No malware can infect your Mac through JavaScript. It’s OK to leave it enabled.
Block browser popups: Safari menu > Preferences > Security > and check "Block popup windows":
Popup windows are useful and required for some websites, but popups have devolved to become a common means to deliver targeted advertising that you probably do not want.
Popups themselves cannot infect your Mac, but many contain resource-hungry code that will slow down Internet browsing.
If you ever see a popup indicating it detected registry errors, that your Mac is infected with some ick, or that you won some prize, it is 100% fraudulent. Ignore it.
Ignore hyperventilating popular media outlets that thrive by promoting fear and discord with entertainment products arrogantly presented as "news". Learn what real threats actually exist and how to arm yourself against them:
The most serious threat to your data security is phishing. To date, most of these attempts have been pathetic and are easily recognized, but that is likely to change in the future as criminals become more clever.
OS X viruses do not exist, but intentionally malicious or poorly written code, created by either nefarious or inept individuals, is nothing new.
Never install something without first knowing what it is, what it does, how it works, and how to get rid of it when you don’t want it any more.
If you elect to use "anti-virus" software, familiarize yourself with its limitations and potential to cause adverse effects, and apply the principle immediately preceding this one.
Most such utilities will only slow down and destabilize your Mac while they look for viruses that do not exist, conveying no benefit whatsoever - other than to make you "feel good" about security, when you should actually be exercising sound judgment, derived from accurate knowledge, based on verifiable facts.
Do install updates from Apple as they become available. No one knows more about Macs and how to protect them than the company that builds them.
Summary: Use common sense and caution when you use your Mac, just like you would in any social context. There is no product, utility, or magic talisman that can protect you from all the evils of mankind.

IMac 24" doesn't start after installing Mavericks.

After installing Mavericks (10.9.2) the machine started having hiccups... rebooting at random times on it's own. After upgrading to 10.9.3, it only got worse. Reboots were more frequent (as little as 1 minute between each reboot). Then it took the final step and went into a state where it remains with black screen, the startup jingle may begin, but is killed within half a second or less... goes into a reboot loop. The DVD sounds, then it tries to reboot again, DVD sounds... sometimes the jingle starts... but is cut off by a reboot. Trying to get ANYTHING done with different key press combinations (option+command+R+P, D, T, Command, Option... pretty much every single combination one can find online for accessing safe boot or recovery or whatever... does not work. The machine seems to have been killed by Mavericks. I have come across a LOT of posts by other people who have experienced the same thing (rebooting after installing Mavericks) going back to October last year, and a few have experienced the same dead computer issue as I am having... all the while there is no fix or explanation from APPLE regarding this issue. I have even opened the machine up and checked all cable connections, tested the HDD on another computer (was ok), cleaned the memory module connectors etc. Before the total crash I had installed a temperature monitoring program with ventilator control, due to the DVD ventilator running at high RPM after installing Maverics. All the temp sensors were reporting modest temps (ranging from 39 - 79 Celsius (only the power supply was above 50 Celsius).
The computer is as useful as a brick by this point. Since it went dead, it has successfully started up 3 times (out of 500+ attempts), but rebooted within a couple of minutes, into it's cycle of dead reboots.
One way of getting it to boot and prepare for re-installation, is to keep the power button pressed until it sounds 3 times long, 3 times short and 3 times long beeps... it would only start making the first beep... then it rebooted in to death again.
Could it be that Mavericks is destroying the firmware, or even killing the hardware? I also have Mavericks on MBA and MBP, where the MBA has no problems, while the MBP freezes up every 2 days or so... requiring a forced reboot.
Anyone with a usable advice on what to do in order to get the machine working again? How many years does it normally take APPLE support staff to fix serious issues like this one? It's already been over 7 months since the first people began experiencing these issues with Mavericks, but nothing has been done about it on APPLE's end ... as far as I can tell.
Looking forward to some solutions.

Just wanted to write the conclusion of this issue here, and make things as clear as possible.
I took the iMac to a support center, and they confirmed that several components on the power supply board were fried and other parts had been overheated. It took a few weeks for them to get the needed parts (much cheaper than replacing the entire unit). I brought the iMac back home and started it up, and it did work... but it was getting very hot very quickly. I was thinking that maybe I should install Mountain Lion on it, and get away from Mavericks... just in case.... the computer had been turned on for around 1 hour at that point, and then it rebooted.... and stayed dead for 10 minutes or so... until it could start up again. Was on for a few minutes... then dead again.
Clearly the cause of the problem was still present, and fixing the symptom did not prove to be a lasting solution.
The machine would not stay turned on long enough (when it DID turn on) for even formatting the disk, so I removed the SDD from it, formatted it with my MBA (connected through USB), and inserted it in the iMac again. Starting it up resulted in a few minutes being turned on, overheating and crashing. Having downloaded ML and created a USB installer for it, it was now a case of trying one's patience ... hoping for the machine to stay turned on long enough to make it all the way through the installation process.... it managed to do the first part of the installation after several hours of crashing and overheating.... and it came to a point where I simply turned it off and gave up... thinking that the problem simply was physical in nature, and not caused by Mavericks as I had assumed from the start. Next day I had renewed energy, turned the puter on and it behaved in the same way... turning off, then starting by itself trying to get through the installation.... it would fail again and again... I left the house, with it turned on, hoping that it would at least manage to finish at some point in time... so that I could write off my "BAD Mavericks" suspicion. When I returned several hours later, the installation was complete and the machine was purring quietly and the back of the computer was NOT hot like a steam iron.
Now it has been working for several days without any problems at all.
The final conclusion is this:
Mavericks IS at fault, and will physically DESTROY computers that are "somehow" not compatible with it. I would have thought that Apple had enough capable engineers to prevent the operating system to mess up the hardware in this way, but clearly I was wrong on that account. I can only WARN other people to even attempt installing Mavericks on puters of this type:
Hardware Overview:
Model Name:   iMac
Model Identifier:     iMac7,1
Processor Name:       Intel Core 2 Duo
Processor Speed:      2.4 GHz
Number of Processors: 1
Total Number of Cores:        2
L2 Cache:     4 MB
Memory:       4 GB
Bus Speed:    800 MHz
Boot ROM Version:     IM71.007A.B03
SMC Version (system): 1.21f4
Serial Number (system):       W8*******X89
Hardware UUID:        00000000-0000-1000-8000-001B639688F7
Anyone claiming that Mavericks is not at fault, is plain and simple WRONG, in DENIAL or LYING. There is absolutely NO doubt in my mind any longer, that the problem was indeed Mavericks getting installed on the machine and messing with the hardware on a level where it should never happen. If someone working at Apple would like to purchase/replace my iMac in order to test it and figure out that this is a REAL problem, they are welcome to do so. I think it is more than guaranteed that the damage caused by this Mavericks nightmare installation will never be recovered, nor will the time and work lost ever be compensated, but I would actually like Apple to acknowledge their responsibility and failure to address this issue in a professional and responsible way.
IF Mavericks was NOT at fault, then someone should explain the logic behind the machine physically burning components shortly after the installation of Mavericks, and even when the SDD had been wiped clean with no OS, it was still overheating and shutting off, until it could finally have ML installed... and at that point it was cured and has worked flawlessly ever since. Not a single hiccup, no over heating, no problems.
My offer to sell/replace the iMac stands if Apple is really interested in looking at this SERIOUS issue with Mavericks. This is NOT a minor issue they should expect simply goes away, or will be ignored by people who experience their machines BURNING to pieces.
On my MBA and MBP Mavericks is not causing any problems, so it is not "all bad", but for the iMac it meant total annihilation.
Anyone who has installed Mavericks on their iMac of similar age as mine, having rebooting and overheating problems: REMOVE the Mavericks installation ASAP and get ML on it before it goes up in flames!
Other Mac's have been reported having the rebooting/overheating problems as well, although I have not noted down which builds those were. The problem is REAL and COSTLY for those who experience it.... both time-wise and in terms of lost time/work.
Hopefully this will help others from getting the same terrible experience as I got, and save some computers from burning up.
<Personal Information Edited by Host>

Serious external drive problems after installing Mavericks

OK, so now I am seeing multiple external drive problems. Here is my setup: A GTech 4TB drive connected to MacBook Pro via Firewire, formatted of 2 partitions of 2TB each (called GT1 and GT2). This is then daisy chained to two WD drives of 2TB each, called WD1 and WD2.
After installing Mavericks everything worked fine (in fact I have an amazing speed increase). However, after restarting my machine this morning I have the following issues:
The GTech is now a single partition called MyBook (obviously a hangover from the WD drives. I suspect the WD drive managment software) with NO data files. Interestingly it shows the following USED 1,106,870,272 bytes (1.11 GB on disk). This suggests that one of the partitions has disapeared completely.
Whilst WD 1 launces ok, WD 2 causes the Finder to relaunch whenever selected, meaning I can't get to the files. I remember having this problem before when I upgraded to SL, and it having something to do with hidden files that needed to be deleted via the terminal. However, I have searched the web and can't find the solution again.
Given that WD 1 and 2 are my backups of GT 1 and 2, then I now have a situation where I cannot access my primary or backup files for GT 2. Very impressive - not!
Can anbody remember the hidden file solution for the finder relaunch?
Can anybody help me get back my GT1 and 2 partitions (as they have the latest work on them)?

FIrewire & Thunder bolt drives are having issues with Mavericks, avoid same until a fix is issued if you can.
many are reporting same, there is a firewire fault and TB HD on external HD from LaCie (Seagate) and from WD especially.
Technicians are looking into it.
Until there is resolution, consider setting up a USB ext. Time machine HD.
Until then consider confining Mavericks use with USB HD.
Ive tested a very long line of USB HD on Mavericks, all seem fine.
Recommend anyone DO NOT ATTACH any WD MyBook externals (firewire, thunderbolt or otherwise).
I dont have same to test, so I dont know if the problem is in the firmware on the SATA bridge or if its a problem with the WD software

After install maverick i dont have sound at all

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