My Mac Book Pro display has turned purple/blue, - why?

My screen started to flickr and has now turned purply/blue as if something has died..any one know why?

Your first choice is to go to System Preferences>Displays>Color. Make sure that your profile set is the appropriate one for the MacBook Pro, which should be "Color LCD".
I'm going to skip all of the normal suggestions of resetting this and that, because from what I've researched this in the past, and it appears you have an issue with either the graphics chip (low probability) or a worn cable causing one of the color channels to be bad or your LED screen has a problem.
In other words, it's probably hardware related.

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My Mac book pro won't turn on at all and when i put it to charge the light blinks, what should I do?

My Mac book pro won't turn on at all and when i put it to charge the light blinks, what should I do?

Yes if your model MBP has a removable battery. If it does not:
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.
http://support.apple.com/kb/HT3964

My Mac book pro screen has a constant white mark on it.

Hi,
My Mac book pro screen has a constant white mark on it, i have no idea why, its like its inside the screen, its never been dropped or had anything fall on it and the mark is starting to get bigger. Has anyone else had the same problem? i've inserted a pic of it, hopefully you can make it out.
Thank You

I see a multitude of white marks on your display. Your best option is to make an appointment at an Apple store genius bar and have the technicians examine the MBP. Hardware problems such as this cannot be solved via these forums.
Ciao.

My mac book pro won't turn on, My mac book pro won't turn on

My mac book pro won't turn on, My mac book pro won't turn on

Go step by step and test.
http://support.apple.com/kb/TS1365
Note: Steps 5 and 6
Step 5
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".

My Mac book pro is not turning on keeps on making very annoying beeping noises. I need to know how to fix it NOW

My Mac book pro is not turning on keeps on making very annoying beeping noises. I need to know how to fix it NOW

Beeps on startup:
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images.
5 beeps = processor is not usable
http://support.apple.com/kb/HT2538

HT3205 My mac book pro will not turn on. The light on the battery charger is weak, barely visible.

I recently purchased an iphone 5s. After returning home form the apple store, so very excited to sync my new device, my mac book pro won't turn on.
it was last used 3 hours prier to me returning home. It won't turn on, the charger light is weak, barely visible. When I plug the charger to another device it works fine. Before I take it to be repaired I would like to get a general idea of the problem, as well as an estimated cost.

A. We have no idea what the problem might be.
B. We have no ideaa what it will cost to repair it.
C. Please make a Genius Appointment and take it in for service.

Mac book pro won't turn on after after accidentally shutting it down during updating

Please help, I was updating my Mac book pro and accidentally shut it off. Now it wont turn on, it shows the apple logo and the continuous cycle circle.

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your 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 your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into 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.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot 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.
c. 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
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot 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.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot 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 your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot 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, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot 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 reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see Step 1.) Select your 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 reboot as usual.
Step 6
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 7
Repeat step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.
Step 8
This step applies only to a pre-2013 Mac Pro tower, not to any other model. A dead logic-board battery can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions.
Step 9
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested.

My WiFi on my Mac Book Pro will not turn on.

For a couple of months now, my wifi on my Mac Book Pro has been hit and miss on connecting to my network. Now, for the past several months, I cannot get teh wifi to even turn on. I am running version 10.8.5, 2.66 Ghz 4 GB 1067 Mhz DDR3 late 2008 model. An anyone help? Or is the hardware just dead? Thank you in advance.

Does the startup chime sound?
Allan

My mac book pro screen has gone white and won't close down - any tips ?

Can someone help my screen on Mac book pro has gone white and I can,t turn off or close down

Hold the power button down for 10+ seconds.
Ciao.

Mac book pro mid 2012 turn off randomly

when not plugged in my mid 2012 mac book pro just turns off randomly and I just replaced the battery a month ago the old battery gave me the same problem and the new one was fine until about 2 weeks ago now it just shuts off randomly and I have no idea why because the battery has only 36 cycles on it
Model Information:
Serial Number: W03065AG7D3LC
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 201
Hardware Revision: 000a
Cell Revision: 165
Charge Information:
Charge Remaining (mAh): 4858
Fully Charged: No
Charging: Yes
Full Charge Capacity (mAh): 5058
Health Information:
Cycle Count: 36
Condition: Normal
Battery Installed: Yes
Amperage (mA): 140
Voltage (mV): 12338

I have made a strange observation too I decided to clean out the dust and once the bottom was off I propped the computer up with pens so it was not touching the desk and turned it on but the computer has not shut off without warning anymore

I have a mac book pro that has become very slow. It has gradually gotten worse over the last 6 months. What can I do to enhance performance and speed?

I have a mac book pro 9,2, with intel corei5, 2.5 GHz., 1 processor, 2 cores, L2 cache (per core) 256KB, L3 Cache: 3MB, Memory 4GB, Boot Rom Version MBP91.00D3.BO8
System Software Version : OS X 10.9.5 (13F34)
Kernal Version: Darwin 13.4.0
Boot Volume: Macintosh HD
Boot Mode: Normal
Secure Virtual Memory: Enabled
Regarding the Macintosh Hard Drive:
Available space 208G.66GB , Capacity 499.25GB
Intel 7 Series Chipset, Link speed 6 Gigabit
Apple HDD Toshiba MK5065GSXF, Revision GV201B
Using Kodak ESP Printer 5200 Series AiO
Memory slots Bank0/DIMMO 2GB DDR3 1600MHZ and BANK 1/ DIMMO 2GB DDR3 1600MHz
The problem I am experiencing is a slowness of response between changing from various applications. What steps could I take to clean up the boot speeds, the applications speeds and general performance of the computer? I would like to restore the speeds of that when it was new.
Thank you for any suggestions you may have.

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

When I turn my mac book pro on the screen goes blue

Hi when I have had my mac book pro for well almost a year now and for some odd reason twice now when I turn on the computer the screen goes blue and will not go to the desk top....please advice

http://docs.info.apple.com/article.html?path=Mac/10.6/en/8963.html

My Mac book pro displays black screen says no bootable device insert boot disk. I have no boot disk to insert. What should i do.no bootable device"

My Mac book pro immediately displays black screen when I start up and says no bootable device insert boot disk. My question I don't have boot disk nor recovery disk to restore the system. Urgently needs your support and help. Thanks in advance. Michael l. Lluch

Hello
any chance you have try a bootcamp / win install into your Mac ??
if so
try this to boot into mac os
restart your mac , just after start up sound hold on "ALT" key to sart on drive manager
if that work select mac os volume using arrows key and validate by enter
HTH
Pierre

Hi, my mac book pro computer has been off and now I am trying to on it but its not on so please help me

hi, my mac book pro computer stop working saddanly and now I am trying to on it but its not oning please help me

Troubleshooting: My computer won't turn on
BTW, this is the Mac Pro desktop forum

Mac book pro won't turn on mavericks

I successfully upgraded to Mavericks 2 weeks ago and have been having sporadic problems.
Today my Mac Book Pro 15" 2012 edition (not retina) turned off while I was using it and will not turn back on.
Anyone have a similiar problem?

Hello ColeSF,
It sounds like you have been using OS X 10.9 for a bit and suddenly in the middle of using it, the computer shut down will not turn back on. I was researching what could be causing this to happen and found this article that should help you troubleshoot the issue named:
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/TS1367
Verify you have a good connection from your Mac to the wall outlet by confirming the power cord and adapter if present are securely connected and plugged in. To check if the wall outlet is working, plug in a lamp or other electrical device.
If the wall outlet is working and you continue to have no power try another power cord or adapter if available. If it works you may need a replacement cord or adapter.
Note: See Apple Portables: Troubleshooting MagSafe adapters for further troubleshooting with MagSafe adapters.
Disconnect all accessories that are plugged in to the computer, such as a printer, hub, or other mobile device.
If your Mac supports user-installable memory, solid state drive, or hard drive, and you recently installed any of these, make sure they are installed correctly and are compatible with your computer. If possible, reinstall the original memory or drive into the computer to find out if the behavior persists afterwards.
MacBook Pro: How to remove or install memory
MacBook: How to remove or install memory
Mac Pro: How to remove or install memory
Mac mini: How to remove or install memory
iMac (27-inch, Late 2012): Installing or replacing memory
iMac: How to remove or install memory
Reset the SMC.
If you are still unable to start up your computer after trying each of these steps, visit an Apple Store or Apple Authorized Service Provider (AASP) for further diagnosis. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).Note: Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).
Thank you for using Apple Support Communities.
All the very best,
Sterling

My Mac Book Pro display has turned purple/blue, - why?

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