Why is my computer so glitchy?
I installed Lion and now my keystrokes are delayed and the system is very slow. Any thoughts?
Activity Monitor - Mavericks also Yosemite
Activity Monitor in Mavericks has significant changes
Performance Guide
Why is my computer slow
Why your Mac runs slower than it should
Slow Mac After Mavericks
Things you can do to resolve slowdowns see post by Kappy
Try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor. Please use copy and paste as screen shots can be hard to read.
Etrecheck – System Information
Similar Messages
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Hi, I have backed up 2 IMACs and one Mac Book Pro but for some reason, the 3rd IMAC come up with this problem: The backup disk image “/Volumes/Data/Anthony’s iMac.sparsebundle” could not be accessed (error -1). Why? The computer system is up to date and I have had no issue with the other computers, just this one.
Many thanks
AnthonyTry this Discussion...
https://discussions.apple.com/message/18783684#18783684 -
I have a DVD I recorded from my tv. I am trying to make copies and when I insert the DVD, I get a message saying the DVD is blank, which it is not. My questions are: Why does my computer think it's blank? And how can I copy the DVD providing my computer recognizes there is content on it?
Thanks, SheilaTV video typically is copyrighted content. We'd be breaking several rules trying to help you. Good luck!
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Why does my computer display a spring coloured wheel that stops me from doing anything
Why does my computer display a spinning coloured wheel that stops me from doing anything, the only way to get rid is to switch off and reload...
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.
Step 1
For this step, 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.
In the top right corner of the Console window, there's a search box labeled Filter. Initially the words "String Matching" are shown in that box. Enter "BOOT_TIME" (without the quotes.)
Each message in the log begins with the date and time when it was entered. Select the BOOT_TIME log message that corresponds to the last boot time when you had the problem. Now clear the search box to reveal all messages. Select the ones logged before the boot, during the time something abnormal was happening. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
For example, if the system was unresponsive or was failing to shut down for three minutes before you forced a restart, post the messages timestamped within three minutes before the boot time, not after. Please include the BOOT_TIME message at the end of the log extract—not at the beginning.
If there are long runs of repeated messages, please post only one example of each. Don’t post many repetitions of the same message.
When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Some private information, such as your name, may appear in the log. Anonymize before posting.
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.
Step 2
In the Console window, select
DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar.
There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A crash report has a name that begins with the name of the crashed process and ends in ".crash". A panic report has a name that begins with "Kernel" and ends in ".panic". A shutdown stall report has a name that ends in ".shutdownstall". Select the most recent of each, if any. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot. It's possible that none of these reports exists.
I know the report is long, maybe several hundred lines. Please post all of it anyway.
If you don't see any reports listed, but you know there was a crash or panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
Please don’t post other kinds of diagnostic report—they're very long and rarely helpful. -
HT4689 why is my computer running so slow
my mac seems to be running very slow since i did the last update any idea why???
Activity Monitor – Monitor Performance Problems
Performance Guide
Why is my computer slow
Why your Mac runs slower than it should
Things you can do to resolve slowdowns see post by Kappy -
Why does my computer keep disconnecting from my wifi?
Why does my computer keep disconnecting from my wifi?
Some users with various Wi-Fi problems have reported that they were given the following instructions by Apple Support, sometimes with success. After completing the procedure, you'll have to recreate all your settings in the Networkpreference pane. Make sure you know how to do that before you begin. Taking screenshots of the preference pane may be helpful.
Step 1
Back up all data.
Triple-click anywhere in the line below on this page to select it:
/Library/Preferences/SystemConfiguration
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A folder should open with an item named "SystemConfiguration" selected. Move the selected item to the Trash. You may be prompted for your administrator password. Reboot and recreate the network settings.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combinationcommand-C. In the Finder, select
Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
Step 2
Reset the System Management Controller.
Step 3
Reset the PRAM. -
HT1420 Why does my computer keep asking to be authorized when i put my iphone on the charger?
Why does my computer keep asking to be authorized when i put my iphone on the charger?
Authorization and Deauthorization
See iTunes Store- About authorization and deauthorization for Macs.
See How to Authorize or Deauthorize iTunes | PCWorld for Windows.
In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it.
More On De-authorizing Computers (contributed by user John Galt)
You can de-authorize individual computers, but only by using those computers. The only other option is to "de-authorize all" from your iTunes account.
1. Open iTunes on a computer
2. From the Store menu, select "View my Account..."
3. Sign in with your Apple ID and password.
4. Under "Computer Authorizations" select "De-authorize All".
5. Authorize each computer you still have, as you may require.
You may only do this once per year.
After you "de-authorize all" your authorized computers, re-authorize each one as required.
If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us. -
Why does my computer occasionally/randomly tell me "I need to restart..." - in four languages. Something ain't right.
Thanks, rkaufmann87, that sounds like me all over. I didn't have a DiagnosticReports folder but I did have a "PanicReporter" folder. I have copied the most recent log (from earlier today) below. I would be grateful for your thoughts on solution or any further direction you can provide. Thanks.
2011-11-17-085303.panic
Thu Nov 17 08:53:13 2011
panic(cpu 2 caller 0x00143764): "zalloc: \"kalloc.4096\" (311818 elements) retry fail 3"@/SourceCache/xnu/xnu-1228.15.4/osfmk/kern/zalloc.c:966
Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
0x7ef4f888 : 0x12b4c6 (0x45f91c 0x7ef4f8bc 0x13355c 0x0)
0x7ef4f8d8 : 0x143764 (0x4614d8 0x460150 0x4c20a 0x3)
0x7ef4f978 : 0x12fdc2 (0x26f045c 0x1 0x3df2d040 0x12ffb7)
0x7ef4f9a8 : 0x1304e9 (0xd3c 0x1 0x7ef4f9d8 0x8c)
0x7ef4f9d8 : 0x97e2436d (0xd3c 0xaa99a80 0x7ef4fa18 0x12fdc2)
0x7ef4fa08 : 0x97e277b3 (0x1 0xd38 0x7ef4fa38 0x68d89e00)
0x7ef4fa28 : 0x97e23514 (0x68d89e14 0x0 0x0 0x0)
0x7ef4fa58 : 0x3bfc6b (0x3df2d054 0x2b9317f8 0x0 0x24f0a3)
0x7ef4fa98 : 0x3bfd28 (0x2b9317f8 0xaa02904 0x0 0x0)
0x7ef4fab8 : 0x3af826 (0x2b9317f8 0x0 0x0 0x0)
0x7ef4fae8 : 0x248b69 (0x2b92dbf4 0x0 0x7ef4fbe8 0x100007f)
0x7ef4fce8 : 0x23ee2e (0x7b19f300 0x14 0x14 0x6)
0x7ef4fd28 : 0x240ba9 (0x7b19f300 0x14 0x6 0x0)
0x7ef4fe48 : 0x240be5 (0x7b19f300 0x0 0x1 0x549124)
0x7ef4fe68 : 0x22ca34 (0x2 0x7b19f300 0x7ef4fea8 0xffffffff)
0x7ef4fea8 : 0x21b36e (0x2 0x7b19f300 0x0 0x0)
Backtrace continues...
Kernel loadable modules in backtrace (with dependencies):
com.symantec.kext.confidentialData(1.3f44)@0x97e22000->0x97e2dfff
dependency: com.symantec.kext.internetSecurity(1.3.2f5)@0x62b000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
9L30
Kernel version:
Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386
System model name: MacPro1,1 (Mac-F4208DC8)
System uptime in nanoseconds: 145228120280331
vm objects:5850460
non-kernel map entri:1264428
kernel map entries:8462300
pv_list:1851864
kalloc.16:5443584
kalloc.32:81367040
kalloc.64:63418368
kalloc.128:2445312
kalloc.256:80748544
kalloc.4096:1277206528
kalloc.8192:2015232
vm pages:66613448
ipc ports:1197700
MAC Labels:1326168
vnodes:5018400
namecache:1644240
HFS node:6737024
HFS fork:2779840
buf.4096:2920448
buf.8192:56360960
Kernel Stacks:1785856
PageTables:29204480
Kalloc.Large:11616404
unloaded kexts:
com.apple.iokit.IOUSBMassStorageClass 2.0.8 - last unloaded 78388390721999
loaded kexts:
com.symantec.kext.fw 1.0.3f5
com.symantec.kext.confidentialData 1.3f44
com.symantec.kext.filesecurity 1.3.3f65
com.symantec.kext.SymAPComm 11.1.2f17
com.symantec.kext.pf 4.1.1f13
com.symantec.kext.ips 3.2f8
com.symantec.kext.internetSecurity 1.3.2f5
com.apple.driver.iTunesPhoneDriver 1.0 - last loaded 78264274723293
com.apple.iokit.IOUSBMassStorageClass 2.0.8
com.apple.filesystems.msdosfs 1.5.5
com.apple.driver.AppleHWSensor 1.9d0
com.apple.filesystems.autofs 2.0.2
com.apple.driver.AppleUpstreamUserClient 2.7.5
com.apple.driver.AppleHDA 1.7.1a2
com.apple.iokit.IOBluetoothSerialManager 2.1.9f10
com.apple.GeForce 5 -
Why does the "Computer Name" sometimes change?
Not a big deal, just curious, why does the "computer name" sometimes change?
The name will be the same, but it will add a number....2,3,4...I always change it back so it doesn't have a numeric value next to it, but just wondering why it happens.
Thanks.Can also occur after your computer is put to sleep and then wakes back up or after your computer is force quit and immediately restarted. Sometimes the router 'believes' the computer is still connected when it actually isn't. When that computer re-establishes a connection the router 'tells' the computer that a computer with that name already exists so it has to change its name. By default a computer running MacOS adds a number (or increments its number) when this happens.
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why is my computer booting up slow,can the battery have anything to do with it?
Hi tecknik!
I'm so sorry for any trouble with calls and messages! I know how important it is to have a properly working phone. Which iPhone do you have? Please reset the network settings: settings/general/reset/reset network settings. Once that is done, please monitor the device and see if that corrects the issue. What is your zip code?
I'm anxioud to get to the bottom of this for you!
ChristinaB_VZW
VZW Support
Follow us on Twitter @VZWSupport -
Why is my computer encountering a problem withmicrosoft silverlight
Why is my computer encountering a problem with microsooft silverlight? i have tried reinstalling. main issue pertains to watching netflix
On what Mac running what version of OS X and Silverlight?
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Why is my computer displaying A's with boxes around them instead of words?
Why is my computer displaying A's with boxes around them instead of words? Is this the malware virus of today? I can get on the internet but just can't read anything. Please help!
Back up all data.
Launch the Font Book application and validate all fonts. You must select the fonts in order to validate them. See the built-in help and the support article linked below for instructions. If Font Book finds any issues, resolve them, then boot in safe mode* (by holding down the shift key at the startup chime) to rebuild the font caches. Boot again as usual and test.
Mac 101: Font Book
*Note: If FileVault is enabled under Mac OS X 10.7 or later, or if a firmware password is set, you can’t boot in safe mode. In that case, after running Font Book, launch the 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.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Terminal in the page that opens.
Drag or copy — do not type — the following line into the Terminal window, then press return:
sudo atsutil databases -remove
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. After running the command, reboot as usual. -
Why is my computer telling me my start up disk is full?
Why is my computer telling me my start up disk is full? and What do I do about it? Please help - Linda
Freeing Up Space on The Hard Drive
1. See Lion/Mountain Lion/Mavericks' Storage Display.
2. You can remove data from your Home folder except for the /Home/Library/ folder.
3. Visit The XLab FAQs and read the FAQ on freeing up space on your hard drive.
4. Also see Freeing space on your Mac OS X startup disk.
5. See Where did my Disk Space go?.
6. See The Storage Display.
You must Empty the Trash in order to recover the space they occupied on the hard drive.
You should consider replacing the drive with a larger one. Check out OWC for drives, tutorials, and toolkits.
Try using OmniDiskSweeper 1.8 or GrandPerspective to search your drive for large files and where they are located. -
Why does my computer freeze and curser dissapears?
Why does my computer freeze and curser dissapears?
I had a similar problem after upgrading to Windows 7. The problem seemed to be that there was a dialog box that opened
that was not visible on the screen and it was blocking the print completion. Try this. Open the Adobe PDF Printing Preferences and clear the field "Rely on system fonts only, do not use document fonts." When I did that it solved my problem.
The unseen dialog box seems to be the fault of Windows 7, in my opinion. -
Why is my computer running slow since upgrading to os x yosemite?
I upgraded my MacBook 13" Aluminum (2008) to OS X Yosemite earlier this year, and ever since, my computer has not been as fast as it was on OS X Mountain Lion or before. It ran fine then, but my speed has fallen harshly. Is there a way to make my computer operate faster?
Activity Monitor - Mavericks also Yosemite
Activity Monitor in Mavericks has significant changes
Performance Guide
Why is my computer slow
Why your Mac runs slower than it should
Slow Mac After Mavericks
Things you can do to resolve slowdowns see post by Kappy
Try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor. Please use copy and paste as screen shots can be hard to read.
Etrecheck – System Information
Unless you've added RAM since you bought the computer, you could probably increase the performance by adding RAM. The 2 places I’ve seen recommended most to buy reliable RAM are below. I have purchased RAM several times from Other World Computing and have always been very satisfied with the product and service. They have on-line instructions on how to replace the RAM. OWC has also tested RAM above what Apple states is the maximum. I now have 6GB installed on a machine supposedly limited to 4 GB.
Crucial
Other World Computing
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