Mac Pro computer stop working

Hi,
I have a new mac pro computer, version 10.6.8, Macintosh HD, Memory 4 GB 1333 Mhz DDR3, 2Ghz Intel Core i7.
One of my user account in particular stopped working. The apps does not respond when I click on them. The finder is not responding but throws out a message "The application Finder can't be open, -10810." that I cannot close afterwards. I cannot close the computer normally... when I do open a finder window by some command the right side menu is not the same .. it list the servers and then 'all', instead of the usual folders.
My other service account seem to be working normal but once the Finder error above appeared.
Please, what is wrong and what can I do to fix this?
- Very concerned!

Yes. In the admin account, run this command:
sudo -u fubar -H /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchS ervices.framework/Versions/A/Support/lsregister -kill -r -domain user
Important: change the word "fubar" to the short name of the problem user. You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up.
WARNING: The forum software is adding extra spaces to the command. Copy the command to a text editor first and make sure no spaces have been added in the middle of a word.

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My mac pro suddenly stops working (2011), connection to the monitor stops, but de tiny light on computer still on and all sound stops. what's the problem?

my mac pro suddenly stops working (2011), connection to the monitor stops, but de tiny light on computer still on and all sound stops. what's the problem?

When the display turns off, it is not clear whether the computer has halted, or whether the display subsystem has failed.
Those tests determine whether:
a) Your Mac software had stopped working OR
b) Only the display had stopped working
If the pressing the Caps lock light on the keyboard lights the Caps Lock light on the keyboard, some software is still running -- your Mac has not halted.
If pressing Control-Eject on the keyboard, followed by the Return key shuts down your Mac, the software was still running.
¿Software was still running?
--Yes, the problem is ONLY in the display subsystem
--No, this is a computer-wide problem such as a kernel panic

My Mac Pro has stopped working after downloading Yosemite OS

I downloaded Yosemite and everything was working ok. I left it for a few hours and when I came back it would not work - just a blank screen. I have tried restarting but after the initial 'cord' sound there is just a blank screen. Any ideas?

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
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Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

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confirmed that it is NOT the headphones.
checked preferences, seems ok.
any thoughts?

when i wiggle the front jack i get the sound back.
With that stement I would say it is a faulty jack except for the fact that you say it happens in the back jack too. I suppose a fault in one could affect the other. Other than replacing the faulty jack I see no solution.

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Hi there,
Do you have any resolution to this problem in the end? Because it happened to me an exact same thing.
Please share if you have found a solution to your problem. I also cannot think of what I did wrong to disable the Enter key.
Best Regards,
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Hello,
My macbook pro wifi stop working suddenly, and know appears a X on the wifi icon, what may have happened?
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Hello raphaelitajuba,
The article linked below provides information regarding this indicator and steps that can help restore functionality to your MacBook Pro's Wi-Fi.
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The AirPort status menu (AirPort Menu Extra) FAQ
http://support.apple.com/kb/HT3821
Cheers,
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HDMI port on Macbook pro suddenly stopped working. Is it expensive to fix?

No one here can tell you what the prices are to repair things. We are just users such as yourself.
What makes you think your HDMI port is dead?
You can take it to a Genius Bar for a FREE diagnosis, make an appointment first.
http://www.apple.com/retail/geniusbar
Also check system preferences/Displays make sure that you have all the correct settings.
Check that the cable you are using is good.
Make sure the display you are connecting to is set correctly.
Check here:
http://support.apple.com/kb/ht1573
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Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
. RESET PRAM:
Shut down your Mac.
Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on your Mac.
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It is a 15" MacBook Pro purchased new in October 2007. It has a 2.2 GHz Intel Core 2 Due processor with 4MB shared level 2 cache, 2GB SDRAM, 120GB hard drive, and a NVIDIA GeForce 8600M GT with 128MB of GDDR3 SDRAM.
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Unfortunately, it doesn't.
First, I bought my Mac Book Pro earlier then the specified period. Second, I am not really experiecing a lack of video or a distortion, but another kind of problem. It is more like a complete breakdown, because even the computer stops working, not only the screen. Furthermore, the screen gives signs that a problem occurred, but it doesn't become distorted, it only starts showing many pink lines.
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MacBook Pro 2009
Model Identifier: MacBookPro5,1
Processor 2.4 GHz Intel Core 2 Duo
Memory 4 GB 1067 MHz DDR3
Software OS X 10.8.5 (12F45)
Iphoto '11
Iphoto on my macbook pro has stopped working. It comes up with a message saying that the library is either being used by another user or it is unreadable. Any ideas why I should be receiving this message?
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Offered solution doesn't work:
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I have already copied my photographs to the a library manager but when I tried to reuse iphoto and import the photos back into iphoto, it would not let me.
I can't download photographs from my iphone or my digital camera.
Any ideas on how I can solve this problem?
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Many thanks,
Ed

I have already copied my photographs to the a library manager but when I tried to reuse iphoto and import the photos back into iphoto, it would not let me.
You can't "copy" your photos to the "library manager", there is just no way to any such thing.
Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Repair Database. If that doesn't help, then try again, this time using Rebuild Database.
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Option 2
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Regards
TD

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Henri Silberman

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I've installed Mavericks on my Mac Pro. It works well, generally, but will not stay asleep! Pressing the power button twice sometimes extends the sleep mode but even that seldom results in a full overnight sleep. File sharing off. What else can help?

Hi fremley,
Thanks for visiting Apple Support Communities.
This article may be helpful with determining why your Mac Pro doesn't stay in sleep mode:
Mac OS X: Why your Mac might not sleep or stay in sleep mode
http://support.apple.com/kb/HT1776
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Hard drive access (even if you're not using the computer, a running application might be accessing your drive, such as when downloading a large file or listening to music in iTunes)
Moving the mouse or using a portable Mac's trackpad, pressing a mouse button, or pressing a key on the keyboard
Some System Preferences settings (see below)
Open applications (see below)
Input devices (see below)
Expansion cards (see below)
Additional drives, such as USB, FireWire, DVD, or CD drives (see below)
Best Regards,
Jeremy

Mac Pro computer stop working

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