I deleted the System Configuration files and now my WiFi won't work.

I've always loved Apple but ever since I upgraded to Yosemite I've been having problems with my WiFi connection, it kept dropping. So I decided to look for a solution and I found some forums that said I should go to System Configuration on Finder (Cmd+Shift+G on Finder, then write /Library/Preferences/SystemConfiguration) and that I should delete all the files there. I did just that and now I can't get online at all. Then I read in some other forums that you should only delete certain files... So you can imagine my face when I read that. I tried taking the files I deleted out of the Trash and everything but I still can't connect to the Internet wirelessly. I'm desperate!
My wireless connection used to drop every 2 minutes, and I had to go to Network Preferences, Assistant, Diagnostic, and that would fix it for another 5 minutes, 10 if I was lucky. But now I can't get online at all. I've tried everything I could think of and nothing.
I don't care if my Internet drops anymore, I just want it to go back to the way it was. I'm traveling to Argentina in a week and I need this fixed!!
If anyone can help me I would really appreciate it.

The following support article is somewhat outdated. Where it refers to booting from an installation disc, you should boot into Recovery (if running 10.7 or later) by holding down the key combination command-R at the chime. If your startup volume is encrypted with FileVault, you’ll have to unlock it in Disk Utility before you can do anything with it.
Mac OS X: Gray screen appears during startup

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Norton deleted the "getplusplus_adobe_reg.exe" file and now I get an error message in Firefox

I recently installed the newest version of Adobe Flash Player. As I was installing the program, Norton Internet Security said that the "getplusplus_adobe_reg.exe" file was suspect, so I deleted it. Now, every time I load Firefox, I get an error message saying that file is missing, and some websites do not function properly. I tried uninstalling and re-installing Firefox, and this did not solve the problem.
== This happened ==
Every time Firefox opened
== I installed the newest Adobe Flash Player version

Getplus is the problematic Adobe Download Manager (DLM) which no one needs. See if the suggestions in the following will help you to get rid of it: http://secunia.com/community/forum/thread/show/3665/adobe_dlm_will_not_uninstall
When updating or installing Adobe Flash (aka Shockwave Flash) follow these instructions (NOTE: you have the most current version installed):
'''Install/Update Adobe Flash Player for Firefox (aka Shockwave Flash)''': your ver. 10.0 r22; current ver. 10.1 r53 ('''important security update 2010-06-10''')
~~red:Check your version here~~: http://www.mozilla.com/en-US/plugincheck/
See: '''[http://support.mozilla.com/en-US/kb/Managing+the+Flash+plugin#Updating_Flash Updating Flash]'''
-'''use Firefox to download''' and '''SAVE to your hard drive''' (save to Desktop for easy access)
-exit Firefox (File > Exit)
-check to see that Firefox is completely closed (''Ctrl+Alt+Del, choose Task Manager, click Processes tab, if "firefox.exe" is on the list, right-click "firefox.exe" and choose End process, close the Task Manager window'')
-double-click on the Adobe Flash installer you just downloaded to install/update Adobe Flash
-when the Flash installation is complete, start Firefox, and test the Flash installation here: http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_15507&sliceId=1
*'''NOTE: On Vista and Windows 7''' you may need to run the plugin installer as Administrator by starting the installer via the right-click context menu if you do not get an UAC prompt to ask for permission to continue (i.e nothing seems to happen). See this: http://vistasupport.mvps.org/run_as_administrator.htm
*'''NOTE for IE:''' Firefox and most other browsers use a Plugin. IE uses an ActiveX version of Flash. To install/update the IE ActiveX Adobe Flash Player, same instructions as above, except use IE to download the ActiveX Flash installer.
*Also see: http://kb.mozillazine.org/Flash ~~red:'''''AND'''''~~ [[How do I edit options to add Adobe to the list of allowed sites]]
'''''Other Issues''''': ~~red:You have installed plug-ins with known security issues. You should update them immediately.~~
'''Update Java''': your ver. 1.5.0_04 (~~red:very old~~); current ver. 1.6.0.20 (important security update 04-15-2010)
(~~red:Firefox 3.6 and above requires Java 1.6.0.10 or higher~~; see: http://support.mozilla.com/en-US/kb/Java-related+issues#Java_does_not_work_in_Firefox_3_6 )
''(Windows users: Do the manual update; very easy.)''
~~red:Check your version here~~: http://www.mozilla.com/en-US/plugincheck/
See: '''[http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates Updating Java]'''
Do the update with Firefox closed.
'''You''' ~~red:'''MAY'''~~ '''need to Update Adobe Reader for Firefox''': your ver. N/A; current ver. 9.3.2
~~red:Check your version here~~: http://www.mozilla.com/en-US/plugincheck/
See: http://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox#Installing_and_updating_Adobe_Reader
''You may be able to update from the Adobe Reader installed on your system'' instead of going to the Adobe site and downloading. Start > Program Files, find and click Adobe Reader to open, click Help, click Check for Updates.
''If you go to the Adobe site to download the current Adobe Reader:''
-'''use Firefox to download''' and '''SAVE to your hard drive''' (save to Desktop for easy access)
~~red:-See the images at the bottom left of this post to see the steps to take on the Adobe site~~
-exit Firefox (File > Exit)
-check to see that Firefox is completely closed (''Ctrl+Alt+Del, choose Task Manager, click Processes tab, if "firefox.exe" is on the list, right-click "firefox.exe" and choose End process, close the Task Manager window'')
-double-click on the Adobe Reader installer you just downloaded to install/update Adobe Reader
*'''NOTE: On Vista and Windows 7''' you may need to run the plugin installer as Administrator by starting the installer via the right-click context menu if you do not get an UAC prompt to ask for permission to continue (i.e nothing seems to happen). See this: http://vistasupport.mvps.org/run_as_administrator.htm
*'''NOTE for IE:''' Firefox and most other browsers use a Plugin. IE uses an ActiveX version. To install/update the IE ActiveX version, same instructions as above, except use IE to download the ActiveX installer.
*Also see: http://kb.mozillazine.org/Adobe_Reader ~~red:'''''AND'''''~~ [[How do I edit options to add Adobe to the list of allowed sites]]

I downloaded the itunes update today and now my itunes won't work at all. It keeps saying I don't have MSVCR80.dll installed and to reinstall itunes. I have tried to reinstall it 3x and still same problem. Now I can access anything on my itunes. Help!

It keeps sating that MSVCR80.dll did not install correctly and to try installing Itunes again. I have tried installing 3x and still same thing. I cannot access any of my music, podcast or books on itunes, it won't open. What can I do?

You need to restore your iPad using recovery mode and the process is covered in this article.
iPad: Unable to update or restore.
http://support.apple.com/kb/ht4097

HT202152 I have tried updating my apps and software but it says my startup disk or hard disk is full. I deleted a lot of files and apps but they won't be erased from the trash. Please help

I have tried updating my apps and software but it says my startup disk or hard disk is full. I deleted a lot of files and apps but they won't be erased from the trash. Please help.

For information about the Other category in the Storage display, see this support article. If the display seems to be inaccurate, try rebuilding the Spotlight index.
Empty the Trash if you haven't already done so. If you use iPhoto, empty its internal Trash first:
iPhoto ▹ Empty Trash
In Photos:
File ▹ Show Recently Deleted ▹ Delete All
Do the same in other applications, such as Aperture, that have an internal Trash feature. Then restart the computer. That will temporarily free up some space.
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—not the mythical 10%, 15%, or any other percentage. You also need enough space left over to allow for growth of the data. There is little or no performance advantage to having more available space than the minimum Apple recommends. Available storage space that you'll never use is wasted space.
When Time Machine backs up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of recently deleted files. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as Backups. The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself. If you followed bad advice to disable local snapshots by running a shell command, you may have ended up with a lot of data in the Other category. Ask for instructions in that case.
See this support article for some simple ways to free up storage space.
You can more effectively use a tool such as OmniDiskSweeper (ODS) or GrandPerspective (GP) to explore the volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one. Note that ODS only works with OS X 10.8 or later. If you're running an older OS version, use GP.
Deleting files inside a photo or iTunes library will corrupt the library. Changes to such a library must be made from within the application that created it. The same goes for Mail files.
Proceed further only if the problem isn't solved by the above steps.
ODS or GP can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
Install the app in the Applications folder as usual. Quit it if it's running.
Triple-click anywhere in the corresponding line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C.
For ODS:
security execute-with-privileges /A*/OmniDiskSweeper.app/*/M*/* 2>&-
For GP:
security execute-with-privileges /A*/GrandPerspective.app/*/M*/* 2>&-
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 and start typing the name.
Paste into the Terminal window by pressing command-V. You'll be prompted for your login password.
The application window will open behind other open windows. When you scan a volume, the window will eventually show all files in all folders, sorted by size. It may take a few minutes for the app to finish scanning.
I don't recommend that you make a habit of doing this. Don't delete anything as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.
When you're done with the app, quit it and also quit Terminal.

New to the Apple and I want to set up a user account that will not delete the guest users files and allow and preserve their personal settings after log out. Is this possible?

New to the Apple and I want to set up a user account that will not delete the guest users files and allow and preserve their personal settings after log out. Is this possible?

The built-in guest user account will not do this. Simply create a new standard account and call it "Guest" or "Guest Users" or whatever you like.
Go to System Preferences > Users& Groups, click "+" to make a new account.

How to repair my macbook pro when i had delete the app store file and know it telling that appstore file has been damage or incomplete and i had the version 10.6.8

how to repair my macbook pro when i had delete the app store file and know it telling that appstore file has been damage or incomplete and i had the version 10.6.8

so is their is any way that i can solve this matter

I can't back up my iPhone4. When was I syncing, My computer hang. I restart computer. Itune told me there is an error, delete the back up file and try again. But there are no back up file to delete in preference-device. Please help!

I can't back up my iPhone4. When was I syncing, My computer hang. I restart computer. Itune told me there is an error, delete the back up file and try again. But there are no back up file to delete in preference-device. Please help!

Thank you for answering my question. If I reinstall itune, is it mean that I need to install music, apps, video...everything in itune again? also intall everything in my iphone again?

I upgraded to 5.0.1 and now 2 apps won't work. Skype and Pinterest. When i tap them they open and immediately close. I deleted and reinstalled both. What do I do now?

I upgraded to 5.0.5 on my iphone4 and now 2 apps won't work - Skype and Pinterest. When I tap them they open and then immediately close. I have tried turning off my phone and deleting the apps then reinstalling them. They still don't work. What do I try next?

I went through your instructions Notification was already off
                                               Alert Sytie was set on None - switched to Alerts
                                               Badge App icon was set on off   Turned it on
                                               Sounds was set to off   Turned it on
                                               View in Lock Screen was set to off Turned it on
Still does not work. Thanks for trying

Will I lose my photos in iPhoto if upgrade to a latest version? I have upgraded my system to Mavericks and now my iPhoto doesn't work. Can anyone help, please?

Will I lose my photos in iPhoto if upgrade to a latest version? I have upgraded my system to Mavericks and now my iPhoto doesn't work. Can anyone help, please?

Most Simple Back Up:
Drag the iPhoto Library from your Pictures Folder to another Disk. This will make a copy on that disk.
Slightly more complex: Use an app that will do incremental back ups. This is a very good way to work. The first time you run the back up the app will make a complete copy of the Library. Thereafter it will update the back up with the changes you have made. That makes subsequent back ups much faster. Many of these apps also have scheduling capabilities: So set it up and it will do the back up automatically.
Example of such apps: Chronosync - but there are many others. Search on MacUpdate or the App Store

HT1338 I have updated my Imac to Mavericks and now my parallells won't work and I have reinstalled as per the instructions. Please help as all my data is on a hardrive that is formatted for PC

I have updated my Imac to Mavericks and now my parallells won't work and I have reinstalled as per the instructions. Please help as all my data is on a hardrive that is formatted for PC.

Yes I just discovered that this morning but I have purchased another external harddrive and formatted it for both and am in the process of transferring the files across it and then I will erase the old harddrive and reformat it so I can use it.
I have learnt to format harddrives from this experience but am happy to see the back of parallells.
Thank you for your help though it is much appreciated.

I downloaded the newest version of iTunes and now my iPhone won't work. What should I do?

I downloaded the latest version of iTunes and now my iPhone won't work properly. What should I do to try to fix this? Should I uninstall the new version and if I do, what version should I install. I am using Windows 7 and iPhone 4S.

Welcome to Apple Support Communities
They are different problems because I doubt that iTunes has been able to modify Mail, that has nothing to do with iTunes.
As you are running 10.7.4, download and install OS X 10.7.5, the most recent Lion version > http://support.apple.com/kb/dl1582 After installing the update, you should be able to run Mail

I have iOS7 on my iPhone4. I turned on the Voice Over option and now my phone is not working at all. At first it was freezing and not accepting any commands. Now all I have is a blank sceen. I can't get back into it. Any ideas what happened here?

I have iOS7 on my iPhone4. I turned on the Voice Over option and now my phone is not working at all. At first it was freezing and not accepting any commands. Now all I have is a blank sceen. I can't get back into it. Any ideas what happened here?

Hi Jeffny01,
If your iPhone is not responding, you may find the following article helpful:
iOS: Not responding or does not turn on
http://support.apple.com/kb/TS3281
Regards,
- Brenden

I updated my computer to the mavericks and now my iPhoto won't work

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<Edited By Host>

I have downloaded ios 6 on my ipad 2 but it wouldn't install and now my ipad won't work (just has the apple logo on the screen periodically) or reset. Any ideas? Thanks in advance.

I have downloaded ios 6 on my ipad 2 but it wouldn't install and now my ipad won't work (just has the apple logo on the screen periodically) and it won't reset. Any ideas folks? Thanks in advance.

Try restoring the device using iTunes. Connect the iPad to your computer and when iTunes opens, select your device on the left side, then click on the summary tab, then click on Restore.
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if that doesn't work, try recovery mode.
http://support.apple.com/kb/ht4097

I updated to the 7.1.2 and now my wifi is messed up and my service is screwed up and I wasn't having any problems until I updated! I need help!!

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Hopefully you won't have to make a trip to the Apple Store.
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I deleted the System Configuration files and now my WiFi won't work.

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