Mac Book Display has seriously reduced Resolution

When I startup my Macbook the display reverts to what can only be called a CGA setting (not even VGA). I have accessed the display settings but they seem to make no difference.
I had a "BE" (UK) ADSL router attached by USB when the change occured.
CAn anyone please help me!!!

Thats odd. I just checked mine and I don't get a choice for 256 colors. At 1280 X 800 resolution I have the choice for thousands or millions in colors. 256 is greyed out. Reset the PRAM (Parameter Random Access Memory) and see if it helps. Mac OS X: What's stored in PRAM?

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My mac book pro has a white screen and won't start up

My Mac book pro has been running slow, so I thought I would shut down and reboot. It wouldn't reboot past a white screen and an apple logo. I have rebooted several times and after an hour or so it still won't go any further. Any suggestions?

Howdy Lowana42,
Welcome to Apple Support Communities.
It sounds like your MacBook Pro has a startup issue that is causing it to only display an Apple logo. Try the suggestions in the article below, they will resolve most issues like this one.
How to Troubleshoot iSight
I hope this helps,
-Jason

My mac book pro has got 41 GB of other stuff on it clogging it up how do I find out what is rubbish and delete it

my mac book pro has got 41 GB of other stuff on it clogging it up how do I find out what is rubbish and delete it. To free up some memory. I can't believe I have filled it up intentionally.

For information about the Other category in the Storage display, see this support article.
Empty the Trash if you haven't already done so. If you use iPhoto, empty its internal Trash first:
iPhoto ▹ Empty Trash
Then reboot. That will temporarily free up some space. Do the same in other applications, such as Aperture, that have an internal Trash feature.
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. You also need enough space left over to allow for growth of your 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.
If you're using Time Machine to back up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of files you've recently deleted. 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.
See this support article for some simple ways to free up storage space.
You can more effectively use a tool such as OmniDiskSweeper (ODS) to explore your 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.
Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo 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 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.
If you have more than one user account, make sure you're logged in as an administrator. The administrator account is the one that was created automatically when you first set up the computer.
Install ODS in the Applications folder as usual. Quit it if it's running.
Triple-click anywhere in the 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:
sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
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. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning to be careful. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The application window will open, eventually showing all files in all folders, sorted by size with the largest at the top. It may take a few minutes for ODS to finish scanning your files.
I don't recommend that you make a habit of doing this. Don't delete anything while running ODS 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 ODS, quit it and also quit Terminal.

I have a mac book pro, an ipad and an iphone. i have an icloud account that allows my iPad and imac to sync. but my mac book only has a connection to 'mobile me'. how can i include my macbook with my other devices? help! thanks

i have a mac book pro, an ipad and an iphone. i have an icloud account that allows my iPad and imac to sync. but my mac book only has a connection to 'mobile me'. how can i include my macbook with my other devices? help! thanks

You need OSX 10.7.2 or higher in order to access icloud. The mobile me account is now defunct (it closed down more than a year ago).

My Mac Book Pro has slowed to less than a crawl (possibly from a worm or virus). How do I make sure it's running at peak efficiency before I complain to comcast

My Mac Book Pro has slowed to less than a crawl (possibly from a worm or virus). How do I make sure it's running at peak efficiency before I complain to comcast

Please answer as many of the following questions as you can. You may already have answered some of them; in that case, there's no need to repeat the answers.
Restart the router and the broadband device, if they're separate. Any change?
Run Software Update and install all available updates for OS X or the computer's firmware. Any change?
If possible, connect to the router with an Ethernet cable and turn off Wi-Fi. Any difference?
Are any other devices on the network, and if so, are they the same?
If you can connect to more than one network, are they all the same?
Are all network applications affected, or only some? If only some, which ones?
Is networking always the same, or is the problem intermittent?
Disconnect all other devices from the network. Any change?
If you're running a MacBook with the lid closed, open the lid. Any difference?
Start up in safe mode and test. Any difference?
Start up in Recovery mode. From the OS X Utilities screen, select Get Help Online. A clean copy of Safari will launch. No plugins, such as Flash, will be available. Any difference?
If possible, turn off Bluetooth and disconnect any USB 3 devices. Any difference?

My 2 year old mac book pro has started to run very hot and sounds as though it is working very hard and seems slower....any thoughts?

my 3 year old mac book pro has started to run much slower, very hot and sounds as though it is running hard....any thoughts?

Login to another User account. Is it faster there?
17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G HD + OCZ Vertex 3 SSD Boot HD 
Got problems with your Apple iDevice-like iPhone, iPad or iPod touch? Try Troubleshooting 101

My mac book air has a virus which is creating a lot of issues...how do i get rid of it? is there a free software to detect it and remove it?

my mac book air has a virus which is creating a lot of issues...how do i get rid of it? is there a free software to detect it and remove it?

There is no need to download anything to solve this problem.
You may have installed one or more of the common types of ad-injection malware. Follow the instructions on this Apple Support page to remove it. It's been reported that some variants of the "VSearch" malware block access to the page. If that happens, start in safe mode by holding down the shift key at the startup chime, then try again.
Back up all data before making any changes.
One of the steps in the article is to remove malicious Safari extensions. Do the equivalent in the Chrome and Firefox browsers, if you use either of those. If Safari crashes on launch, skip that step and come back to it after you've done everything else.
If you don't find any of the files or extensions listed, or if removing them doesn't stop the ad injection, ask for further instructions.
Make sure you don't repeat the mistake that led you to install the malware. It may have come from an Internet cesspit such as "Softonic" or "CNET Download." Never visit either of those sites again. You might also have downloaded it from an ad in a page on some other site. The ad would probably have included a large green button labeled "Download" or "Download Now" in white letters. The button is designed to confuse people who intend to download something else on the same page. If you ever download a file that isn't obviously what you expected, delete it immediately.
Malware is also found on websites that traffic in pirated content such as video. If you, or anyone else who uses the computer, visit such sites and follow prompts to install software, you can expect more of the same, and worse, to follow. Never install any software that you downloaded from a bittorrent, or that was downloaded by someone else from an unknown source.
In the Security & Privacy pane of System Preferences, select the General tab. The radio button marked Anywhere should not be selected. If it is, click the lock icon to unlock the settings, then select one of the other buttons. After that, don't ignore a warning that you are about to run or install an application from an unknown developer.
Still in System Preferences, open the App Store or Software Update pane and check the box marked
Install system data files and security updates (OS X 10.10 or later)
or
Download updates automatically (OS X 10.9 or earlier)
if it's not already checked.

My mac book pro has duplicate photos in my photo library how do I remove the duplicate photos?

My mac book pro has duplicate photos in my photo library - how do I remove the duplicate photos?

Duplicate Annihilator
iPhoto AppleScript to Remove Duplicates
via Old Toad reply in this thread: https://discussions.apple.com/thread/3122008

Just want the information to be out there - my My Mac Book Pro has been stolen! Serial no W8*******ATN, model no A1278. Is there anything I could do to traci it or at least block it ??

Just want the information to be out there - my Mac Book Pro has been stolen! Serial no W8****ATN, model A1278 what could I do to track it or at least block it?
<Personal Information Edited by Host>

You can use iCloud to lock it if you had that set up. Otherwise, the only thing to do is report the theft to the police. You may want to contact your homeowner's insurance to see if it would be worth filing a claim with them also.
~Lyssa

Mac book pro has become very slow. How to analyze this and resolve this?

My mac book pro has become very slow. How to analyze and resolve this?

First, back up all data immediately, as your boot drive might be failing.
There are a few other possible causes of generalized slow performance that you can rule out easily.
Reset the System Management Controller.
If you have many image or video files on the Desktop with preview icons, move them to another folder.
If applicable, uncheck all boxes in the iCloud preference pane.
Disconnect all non-essential wired peripherals and remove aftermarket expansion cards, if any.
Check your keychains in Keychain Access for excessively duplicated items.
Boot into Recovery mode, launch Disk Utility, and run Repair Disk.
If you're booting from an aftermarket SSD, see whether there's a firmware update for it.
Otherwise, take the steps below when you notice the problem.
Step 1
Launch the Activity Monitor 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. Click Utilities, then Activity Monitor in the icon grid.
Select the CPU tab of the Activity Monitor window.
Select All Processes from the menu in the toolbar, if not already selected.
Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.
Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?
Next, select the Disk Activity tab. Post the approximate values shown for Reads in/sec and Writes out/sec (not Reads in and Writes out.)
Step 2
If you have more than one user account, you must be logged in as an administrator to carry out this step.
Launch the Console application in the same way you launched Activity Monitor. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Select the 50 or so most recent entries in the log. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V). You're looking for entries at the end of the log, not at the beginning.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some personal information, such as your name, may appear in the log. Anonymize before posting. That should be easy to do if your extract is not too long.

Hello, I'm pretty sure my fan on my 2009 mac book pro has stopped running. Would this cause the computer to slow down and take for ever to boot up and show the color wheel every time I select an application ?

Hello, I'm pretty sure my fan on my 2009 mac book pro has stopped running. Would this cause the computer to slow down and take for ever to boot up and show the color wheel every time I select an application ? how involved to replace fan ? cost ?
thanks

Not directly, but if the CPU overheats because of incompatible software, that would cause slowdowns. Do not allow the computer to run if the fan is not working unless you wish to fry your motherboard. Please make a Genius Appointment and take it in for service.

The screen on my Mac Book Pro has gone black. It has a cursor that responds to touch pad, but black screen won't go away

The screen on my Mac Book Pro has gone black. It has a cursor that responds to touchpad, but is otherwise completely black.

Blank (lighted, but black) screen with cursor at bootup
[SOLVED] - Macbook Air Sleep/Wake problem
Dark screen on start-up can only see curser

I think my mac book pro has a virus - is that possible and what can I do?

I think my mac book pro has a virus. Is that possible and what can I do?
I opened an attachment on an email claiming to be an order confirmation from Amazon. I now have several copies of it on my desktop and can't delete them.

theforgebridget wrote:
I opened an attachment on an email claiming to be an order confirmation from Amazon. I now have several copies of it on my desktop and can't delete them.
It is highly likely that this attachment is malware. It's also highly likely that it is Windows malware. So you're probably not infected with anything. What is the exact name of the attachment you opened? Please be sure to include whatever extension the filename has (such as .exe, .pdf, .doc, etc).
What happens when you try deleting the attachment files from your desktop? Is there an error message of some kind? If so, what is the exact error message you're seeing? (Please don't try to paraphrase it... tell us the precise wording of the message.)

My Mac book Pro has been stolen on 22nd Sept 2014 in a train.I have activated i cloud on my mobile but it is not activated on laptop. I lodged an FIR in the police station.Can i trace the laptop??

My Mac book Pro has been stolen on 22nd Sept 2014 in a train.I have activated i cloud on my mobile but it is not activated on laptop. I lodged an FIR in the police station.Can i trace the laptop??
<Personal information edited by Host>

If you didn't have "Find My Mac" enabled under the iCloud System Preferences pane, there's likely no way to trace your machine over the Internet.
Sorry,
Clinton
MacBook Pro (15” Late 2011), OS X Yosemite 10.10, 16GB Crucial RAM, 960GB M500 Crucial SSD, 27” Apple Thunderbolt Display

How do I check if my mac book air has a virus?

How do I check if my mac book air has a virus? I was online and something started downloading, I closed it and put it in the trash but not sure if that is enough to get rid of it? Thanks

1) Did it finish downloading? if no, you have nothing more to worry about.
2) Are you using Safari?
3) If using Safari, do you have Safari set to run/open any files automatically?
4) Is your system updated with the latest security update? If not, why?
The bottom line is whether the download was able to install anything.
As long as your settings are such that no download is able to automatically open, and you ae up to date on your security updates, then you haven't much to worry about.
Be familiar with the programs in your application folder, such that you would notice anything not supposed to be there. As well, check and make sure that nothing unknown is being launched at startup (check your account settings).
The absolute best security a Mac can have is an aware and familair user who is moderately vigilant.

Mac Book Display has seriously reduced Resolution

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