How do I change contrast on my monitor of iMac 27 inch

How do you adjust the contrast and color on the iMac 27-inch screen ?

System Preferences > Accessibility > Display -- Enhance Contrast:

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How do i change my apple id on the imac?

how do i change my apple id on the imac?

How to change user short name or home directory name
http://support.apple.com/kb/HT1428?viewlocale=en_US
Also, this might be useful:
http://www.macworld.com/article/132693/2008/03/changeshortusername.html

How do I change the name of my new iMac computer? Migration Assistant gave it the name of my old computer. I want to update it.

How do I change the name of my new iMac computer? Migration Assistant gave it the name of my old computer. I want to update it.

System Preferences>Sharing

How do I change the email associated with my IMac cloud to match all my other devices

When I set cloud up on my IMAC I was prompted to use an address from apple and two other Ipads and two other I phones use my normal email address all wouk fine.
How do I change the email address for my I mac/web to the same email I use for all other apple producte I have that use ICloud?

Welcome to the Apple Community.
Providing you are simply updating your existing details and not changing to another account, when you delete your account, all the data that is synced with iCloud will also be deleted from the device (but not from iCloud), but will be synced back to your device when you login again.
In order to change your Apple ID or password for your iCloud account on your computer, you need to sign out of the account from your computer first, then sign back in using your updated details. (System Preferences > iCloud, click the sign out button)

How do i change the apple ID on my Imac

I have two apple ID accounts. I want all of my apple devices signed into the same apple ID. How can I change the apple ID that I am signed into on my iMac?

General: System Preferences>Users & Groups, click on your User ID, click on Change next to the User ID
iTunes: Click on the name or "Sign-In" in top menu bar on the right-hand side, and sign out the ID that is signed on, or if no one is signed on, sign on your Apple ID of choice
iCloud: System Preferences>iCloud, sign out the Apple ID that is signed on, sign on the preferred Apple ID
Messages - open Messages, click Preferences>Accounts, sign out and then sign in preferred Apple ID
FaceTime - open FaceTime, click on Preferences, then click on the Apple ID, then on Sign out. Then sign in the preferred Apple ID
I can't think of anything else, though there probably are other places where you might be signed in.
Cheers,
GB

How do i change my apple id on my imac

I have a new email address. How do I change my email address in my apple id on my mac pro

http://support.apple.com/kb/HT5621

Since iCloud weeks only start on a Sunday in iPad, preferences on iMac allow week to start on any day. How can I change iPad week start to match iMac?

Since iCloud weeks only start on a Sunday in iCal on my iPad 1, preferences on iMac allow week to start on any day.
How can I change iPad week start on a Monday and to match iMac?

Hi,
Go to Settings>General>International, and make sure that you have the appropriate "Region Format," and "Calendar" settings.
Best wishes
John M

How do I change my keychain password on my iMac?

Currently my login password and my keychain password are the same in OSX 10.9.1. For additional security, how do I change my keychain password so that it is different from my login password?

don't think that's possible your login if you are administrator on the computer is what goes in the keychain too
if you want to give access to people to the computer whom you do not trust with the keychain access then you should consider making user accounts for them with the rights you choose

How can I change the id apple on my imac?

When I want to apdate appear the old ussername and ask me the password. I have not possibiliti to change the ussername!

On your iMac, go to System Preferences, iCloud. Click Sign Out, then sign in with whichever account you want to sync with.
Matt

Had to change my Apple ID because the original email address is no longer valid. How do I change the iCloud user name on iMac? I found instructions about signing out of iCloud and signing back end. It asks questions about contact, etc.

Had to change Apple ID due to email address no longer valid. Trying to change id for icloud...saw direction online about signing out of icloud and signing back in...when it ask questions about contacts, photos, etc. being deleted how do I answer those? That just sort of freaks me out.

For the ones that give you an option, select the option you want (keep on the Mac or Delete). For the ones that are simply warning you, click on Delete from Mac.
They will all come back when you sign back on, since all you did was change your existing Apple ID to a new email address. It's the same iCloud account, just with a different name.
It's the only way to get your updated ID signed onto iCloud.
Cheers,
GB

How do I change my Apple ID on my iMac. It is showing an old ID in System Preferences/Internet Accounts and System Preferences/iCloud

My iPhone, iPad and iMac Safari access to the Apple Store and iCloud are fine and accept my new Apple ID. Mail constantly prompts me for a password with a box that shows my old Apple ID. I'm guessing that somewhere on the iMac I can change or delete the old Apple ID? It's not in the Keychain.
iMac OS X 10.10
Mail 8

Thanks Eric. If I try, I get a box with the statement:
Your iCloud account couldn't be removed at this time.
Mail was unable to delete [email protected] (It just shows this as normal black type without the email envelope) Relaunch Mail then sign our of iCloud again.
It shows an OK box.
The Apple ID shown is of course, the old one, that I am trying to change on the iMac. On my iPhone, iPad, the Apple Store and iCloud via safari, only my new Apple ID is shown.
I tried to insert an image of this scenario but I couldn't insert the chosen 138KB tiff image.

How do I change my printer preset on my iMac?

I have a Canon Pro9000 MarkII and it gives me an error "Support Code : 88 The media type and paper size are not set correctly. Stop printing, change the settings, and print again. If you selected Board Paper as the media type, you need to set the paper size to an art paper size (Margin 35)" Where do I go to change that? I can't do it from the PRINT setting. I have been to a 127.0.0.1:631 to change that, but now I cant access that anymore. I can't print out of my cannon and it is driving me crazy!

The first thing to do is to unadd then readd the printer, depending on the OS Black Apple, Settings> Print&fax>unlock the settings via the gold lock in the bottom left>click the printer>then the minus button in the lower left above the afore mentioned lock>then readd the printer using the plus symbol, if the issue persists redownload the support software for the printer and try again, if issue persists call Canon.

How do i change my iCloud account on my iMac with another account

some please help, my daughter has replaced my icloud account details with hers, now i cant log into my icloud on my macbook pro.
When i click on icould from my prefences... her details pop up. ihave tried to log her out without any luck.
Please can someoen tell me what to do?
i can't seem to log her icloud account out.

Hi funlola,
Thanks for visiting Apple Support Communities.
Use these steps to sign out of iCloud with your daughter's Apple ID:
OS X Mountain Lion and later: Choose System Preferences from the Apple () menu, then click iCloud.
If you're still signed in with your previous Apple ID:
Click Sign Out. Depending on what iCloud options are turned on, you'll be asked if you want to make copies or delete iCloud data (Contacts, Calendar, Reminders, Bookmarks, Photo Stream) from your Mac. Click “Delete from Mac”. The data will be deleted from your Mac, but not from iCloud.
Enter your current Apple ID to sign in. The data from your iCloud account will download again to your Mac.
Apple ID: What to do after you change your Apple ID
http://support.apple.com/kb/HT5796
All the best,
Jeremy

How do i change my icloud account on my iMac

I have an icloud account that I use for my iphone and ipad however when I set up my imac I set up a new icloud account by mistake. How can I get the same icloud account on all 3 devices please help me.

That is the wrong preference pane, if you do not have an iCloud preference pane there is something very wrong with your installation of 10.8.5.
Take a screenshot of the System Preferences>iCloud panel and post it here.
If there is a sign in button in iCloud preferences then you are already signed out.
This is what it should look like (when you are signed in)

How can I change the language on my new iMac 10.8

I made a mistake at setup and would like to change the language from english to french on Applications like Mail , Safari , Calendar etc...

Did that... it works only for the Finder's, Date &time etc., not for Applications like Mail , Safari etc..

How do I change contrast on my monitor of iMac 27 inch

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