My mac book pro does not start properly. It goes past logo then grey screen I cannot access my

MMy MacBook pro will not start up. It goes past the apple logo then only a grey screen, sometimes a blue one with vertical stripes. I have tried starting from a disc also by using different keys, but with the same result. At one point i heard three beeps then a pause repeated. Please help.

See if you can run an Apple Hardware Test:
http://support.apple.com/en-us/HT201257
Note an error free AHT is not definitive.
If addition to the possibility of a RAM problem, the vertical stripes on the blue screen is not a good sign.
Ciao.

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My mac book pro does not start but has error message with a question mark on screen. took it in and was told probably the hard drive as could not reconize it so bought new one but still not connecting.what do i do

My mac book pro does not connect but shows an error message with a question mark on the screen.I took it to a retailer that said it was not reconizing the hard drive.He said i needed a new hard drive but it may be something else as well but he was sure a new hard drive would fix it.So putting faith in someone who deals with them i purchased a new hard drive to find it was still not working although he said the computer did know reconize the hard drive and i may have to send it away to get it checked .After already paying 120 pounds for a new hard drive and they wanting another 80.00 pounds to diagnose it i am a little sceptical.
That's why i am interested on anyone's help.

Welcome to the Apple Support Communities
I think that your Mac detects your hard disk, but the problem is that your new hard disk doesn't contain any operating system, so your Mac doesn't find any bootable partition and you see a question mark.
If your Mac came with DVDs, insert the Mac OS X Install DVD and hold the C key while your Mac is starting. Then, just install Mac OS X. If the hard disk isn't prepared to install Mac OS X, you will have to erase it using "Mac OS Extended (Journaled)". See > http://pondini.org/OSX/DU1.html

Help My mac book pro does not start

i have a huge problem becauce i cannot start my mac book pro, i turn on and apear the gray screen with apple logo and round progresive bar, but just not have any change it cud be hours or days its the same, i already try to restore it by the comands (command+R) or (shift+caps lock) when i turn on my computher but alwais same logo screen, please i need help maby im doing someting wrong

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 on some models, 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 older Macs (not current models) that have a logic-board ("PRAM") battery. Both desktop and portable Macs used to have such a battery. The logic-board battery is separate from the main battery of a portable. 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. You may have to take the machine to a service provider to have the battery replaced.
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. If you can't get to an Apple Store, go to another authorized service provider.

My Mac Book pro does not recognise the wi-fi net. How to fix it?

My Mac Book Pro does not recognise properly the Wi-Fi net at home. I've tried many ways in "preferences", but it realy does not work. When connected in the Ethernet port, it works perfectly.
Don't have any problems with other computers at home.

I don't know what you mean by "doing new concessions on DHCP"!!??? Have you tried using a static IP address to see if it works that way? Have you restricted the range of DHCP addresses available at your router? If you have maybe the other computers have used up the available range. Suggest you try a static IP address first, then we'll take it from there.

HT3964 the indicator light on my mac book pro does not come on and the computer will not start

what can i do if the indicator light on my mac book pro does not come on and the computer will not start?

Here are a couple of trouble shooting articles that may assist you:
http://support.apple.com/kb/ts1367
https://discussions.apple.com/docs/DOC-3353
Ciao.

Mac Book Pro will not start on Battery Power

Mac Book Pro will not start on Battery Power although battery at 98% need to connect charger. When started date and time incorrect, comes up as 1st Jan 2012.

What is the exact model of your MBP? The date change often is an indication of power loss to the MBP, such as disconnecting the battery.
If the SMC reset does not solve the situation, post this from your MBP:
Make certain that the power adapter is connected.
Ciao.

TS2570 My Mac Book Pro will not start up. I ran the AHT and received the following error:

My Mac Book Pro will not start up. I ran the AHT and received the following error: 4SNS/1/40000000:Th0H-90.750. Anyone know what this means?

I have no idea how much it will cost to repair. I don't even know what the exact problem will prove to be. It may be quick if it isn't a motherboard problem. I just don't know. Take it in for a service diagnostic, then they can tell you what is involved.

My mac book pro will not start, i hear the fan sometimes but nothing else

my mac book pro will not start, i hear the fan sometimes but nothing else

What is the exact model of your Macbook Pro?

Resizing with my mouse using touch pad mac book pro does not work. how can i correct this problem?

resizing with my mouse using touch pad mac book pro does not work. how can i correct this problem?

See:
* [/questions/777886]

My mac book pro is not "starting" it makes beeping noise when i turn it on, prior to this for half day it was turning off after an houror so.

my mac book pro is not "starting" it makes beeping noise when i turn it on, prior to this for half a day it was turning off after an hourr so.

It may very well be a RAM issue but possibly something else. Look over this extensive troubleshooting document for a possible solution:
https://discussions.apple.com/docs/DOC-3353
Ciao.

Recently my track pad (in my Mac Book Pro) does not respond to 'clicking' commands.

Recently my track pad (in my Mac Book Pro) does not respond to 'clicking' commands. It does just fine with a USB cable mouse. What do I do?

Are you tapping to click or physically clicking? If you're clicking, does the trackpad button go down all the way?

My mac book pro will not fully boot up. I have the grey background with the apple sign and the timer going round...but 20 minutes later still no desktop

My mac book pro will not fully boot up. I have the grey background with the apple sign and the timer going round...but 20 minutes later still no desktop

You could try doing a hard shut down (holding the power button or yanking the battery) and then doing a safe boot by holding the shift key at startup:
http://support.apple.com/kb/HT1455
Also, not sure if this applies in your case, but I've had that happen when there's a USB drive inserted either in the computer or a connected external keyboard. I did a hard shut down, removed the drive and it went through a normal start up.

17-inch Mac Book Pro does not boot. No startup chime and no video.

Hey guys,
My Mac Book Pro refuses to boot. Whether it's running off the power supply or on the battery, it does the same thing: I hit the power button, I hear the disc drive make it's usual sound, but no apple boot chime, and no video. It just sits there, blank screen and all. Last night in my frustration, I held the power button down for about 5 seconds and the light in front started blinking as if it was expecting a firmware update. I immieditely shut it off. I hope that didn't make the problem worse, but regadless it still has the same problem. I have a feeling my logic board took a dive. What's weird is, I was using it, it was plugged in, I left it for a bit, it went into sleep mode, and that was the last time it was on. It's as if I can't get it out of sleep mode. I've turned it on and off a dozen times, taken the battery out, etc.. And nothing. Any suggestions?

Dead On Arrival (DOA) Product: System Failure Out of the Box
An Apple-branded hardware product is considered DOA if it shows symptoms of a hardware failure, preventing basic operability, when you first use it after opening the box. If you believe that your product is DOA, please call AppleCare Technical Support at 1-800-APL-CARE (1-800-275-2273) within 30 calendar days of the invoice date. AppleCare Technical Support will determine whether the product is DOA and offer you the following options:
Replacement: Apple, at its expense, will ship another of the same product. AppleCare Technical Support will put you in touch with an Apple Store Customer Service Representative who will arrange for replacement and the DOA product’s return.
Service: You may have the product repaired. However, once you choose that option, you may not request replacement of the product.
If AppleCare Technical Support determines that a returned product is not DOA, Apple will apply Apple’s standard product warranty to the product. Further, if AppleCare determines that you have misrepresented a returned product’s condition and that the product is not DOA, Apple may impose a $400 handling fee.
This DOA policy applies only to Apple-branded hardware products currently offered at the Apple Store. As new products are offered, Apple reserves the right to determine whether or not this policy applies. This DOA policy does not apply to third-party products that do not bear the Apple brand name. You must call the manufacturer directly with any third-party product issues.

MAC BOOK PRO WILL NOT START- COMPLETELY DEAD!

I forgot to power down my mac book pro last night. I closed the lid & forgot to go back & turn it off completely. This morning it will not power up. The machine is completely dead.
The power supply wasn't connected overnight so I assume the battery has completely drained. It's been charging for the last 2 hours (which would normally have fully charged it) but the light on the power cord is still showing green so I assume it's still charging, however there should be plenty of juice in the battery to start the computer but it still won't start.
Any ideas how to get it started?

A dead battery will take longer to start charging, but leave it on and eventually it will start to charge again.
Once you get it charged, perform a SMC and PRAM reset
https://discussions.apple.com/docs/DOC-3046

My mac book pro is not starting what can i do?

My mac book pro is staring but has a gray icon and does not boot up, what can i do?

That's a esy fix, usually it's caused by a outdated or incompatible at boot kernel extension file installed by a third party program.
You can hold the shift key down on a wired or built in keyboard while booting for "Safe Mode" to disable these bootup kernel extension files, then go around and update all your third party software then reboot.
Another method is to hold option key down while booting (if on 10.6 with the disk in) and boot off the 10.6 disk, or into 10.7-10.8 Recovery HD partition and reinstall OS X over itself, reboot then Software Update until clear.
That will clear out all and give a fresh OS X copy in the process, but doesn't touch your programs or files.
Read more in detail here
..Step by Step to fix your Mac

My mac book pro does not start properly. It goes past logo then grey screen I cannot access my

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