Macbook pro doesn't boot

I have no idea what's wrong with this computer but it's suddenly stopped working. I noticed that it was really slow for being a two month old machine so I restarted the computer. When I did that instead of rebooting it will go to the gray screen with the apple logo and the spinning wheel. It does this for a moment until the loading bar hits about on fourth of the way across and then it just shuts off. No warning, nothing.
I've done ctrl + r to do disk utility but it says it can't be repaired, ctrl + command + p + r also doesn't work. And trying to boot in safe mode by holding shift doesn't do anything. I ran the Disk Utilities repair and it's telling me that I need to back-up my files and reformat my computer. I literally have no clue how a two month old machine could have this happen to it or if I'll even be able to get all of my pictures off of it.
Unfortunately, I'm out of the US indefinitely and the province in China where I'm living doesn't have an apple store. What's more, I can't seem to submit any claims to apple support because I don't have an American number to list.
Any help would be appreciated!

When I did that instead of rebooting it will go to the gray screen with
the apple logo and the spinning wheel. It does this for a moment until
the loading bar hits about on fourth of the way across and then it just
shuts off.
Drive is corrupted and unable to be repaired.
I ran the Disk Utilities repair and it's telling me that I need to back-up my files and reformat my computer.
Ditto.
I literally have no clue how a two month old machine could have this happen to it
I have a clue, the machine either came with a defective hard drive or got that way by the user moving it while it was operating instead of in sleep or shutdown, the write heads struck the platters.
Apple will usually replace this as a warranty call.
or if I'll even be able to get all of my pictures off of it.
The drive is still working, it's just the magnetic areas on the drive doesn't respond correctly or the data has been changed so it's not readable.
The object now is to get around those areas and read the good areas containing recoverable data.
.Create a data recovery/undelete external boot drive
Unfortunately, I'm out of the US indefinitely and the province in China where I'm living doesn't have an apple store. What's more, I can't seem to submit any claims to apple support because I don't have an American number to list.
Well I don't think the drive has to be replaced, just the data recovered and the MacintoshHD partition erased 0-3x overwrite scrub using Disk Utility while booted from the RecoveryHD (command r boot) partiton on the drive.
Then the object is to install OS X and your programs again, return your files from the backup drive.
Your looking at A-2 here
Reset your Mac
You'll need a fast and reliable Internet connection, your AppleID and password as OS X reinstalls are now downloaded from Apple instead of providing a disk or USB thumb drive.
If you don't have good Internet, then your in trouble.

Similar Messages

Macbook Pro doesn't boot from hard disk

I recently applied an open firmware password to our Macbook Pro.
A co-worker tried to boot via the t-funtion which obviously doesn't work when the open firmware password is active. He forget to contact me so he tried to get it to work using some startup shortcuts. The folowing he had done:
* starting up while holding shift;
* starting up while holding command + option + P + R;
* having the accu out for a while
* starting up while holding shift and let the Mac on for a night
It seems that starting up from the Macintosh HD seems somehow blocked. THe system hangs on the Apple grey splashscreen with the loading icon turning.
I tried the following:
* Tried resetting PRAM using Option + Command + P + R (didn't hear any chimes);
* Trying to reset Open Firmware Password using Option + Command + O + F (nothing happens)
The most promising solution came when holding down the Option key: I got the lock and entered my Open Firmware Password. I was able to boot from the install disc. In the disc utility I verified the hard disk and repaired some permissions. I didn't get error messages. THen I used the startup utility and selected the hard drive as startup disk.
But when I restart the computer, it still hangs on the splash screen. So for now i've run out of ideas.
Message was edited by: StefSOFT
Message was edited by: StefSOFT

With intel Mac they changed to EFI firmware so a lot has changed. From reading this I think if you can get to install disk utilities then why not uncheck +Require password to change Open Firmware settings+ on Firmware Password Utility and that should free up the troubleshooting steps you list above that are blocked. Reinstall of OSX seems logical to attempt. Sadly without further testing could be hardware issue too, need to contact apple authorized service provider in this eventuality. One thing to bear in mind was whether your co-worker altered the firmware in any way, this might invalidate Apple One-Year Limited Warranty, AppleCare Protection Plan, or other AppleCare agreement.

MacBook Pro doesn't boot after crash.

I only had it for a few month (Novebmer 2011).
It crashed while playing an online game and wouldn't let me close the game so I forced a restart by pressing the On/Off button. Trying to start back up I get a grey screen with an Apple logo and a ton of command line text with weird looking codes.
I already tried:
Disconnecting all USB devices.
Botting in Safe Mode (by holing down shift):
Works. Repaired permissons and tried to repair disk. Both tell me it's fine now but I still can't boot normally.
I also turned off Bluetooth just in case my Apple keyboard or touchpad are interfering.
Resetting RAM (by holding down command-option-P-R):No change.
Booting from the repair partiton (by holding down command-R):
Doesn't give me and options but also a grey screen just without the error messages I get when booting normally.
(I don't have a start-up disk to use as the new MacBook Pros don't ship with one.)
Selecting the repair partition after setting up internet in the bottom part.Also just agrey screen with error text.
The MacBook was bought from a Premium Reseller and they changed the RAM for me. I have the original lieing next to me but don't quite dare to change anything myself as I'm afraid I might break something and just make it worse. Given it's from a Premium Reseller I assume it should be apple approved or whatever though.
My second problem is that I'm in France and don't speak French so going to the Apple store is kind of a last resort. (And probably not a good experience.)
I'd be more than grateful for any tips on what else I could try.

What I think has happened is in the process of doing a Force Shut Down you have totally corrupted the hard drive.
Destroying even the Recovery partition.
Now this could be because of a hardware failure, like for some reason the hard drive just crapped out (it can happen at any time).
You can try to boot the computer from the internet, Apples web server. You do that by holding down the Command+R key combo as soon as you hit the power button.
If that does not take you to the internet boot system then you will more then likely have to wait for your Bar appointment.
Good luck.

Macbook pro doesn't boot after iOS upgrade

Hi all,
I've upgraded my macbook pro (was requested automatically the upgrade) and after reboot to finish the installation, my macbook doesn't boot up.
Is there any way to boot it up? A kind of boot in safe mode?
I'm trying to power it up but nothing. It doesn't boot at all.
Please, can you help me with this.
Thanks
Álvaro

iOS is for iPhone, iPad not for Mac. So what upgrade are you referring to?

Spining wheel and apple logo at starup , my macbook pro doesn't boot...!?

my macbook have some problems. it stuck up and not response and i only can force shutdown it .when i want to turn it on , it stuck up and only show spining wheel and apple logo and doesn't boot . i repair disk permissions in disk utility and reset nvpram . but didn't work.i tried to boot to safe mode but progress bar after about 1/3 of bar hidden and again a spining wheel and apple logo . lastly i restore my macbook with time machine in recovery hd.but this problem occured for second time and third time.what i should to do ? sorry for my bad english

Install or Reinstall Mavericks or Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
because it is three times faster than wireless.

Late 2008 Macbook Pro doesn't boot after installing Mavericks

I have a late 2008 Macbook Pro, dual core 2.53 GHZ, 4 GB Ram (2x2).
I've been tearing my hair out trying to get this computer to boot up. Many things have been tried here. So here's the history.
Before starting this, I was running 10.6.8 on this computer.
First time I tried to install Mavericks, the installation failed, and when the computer went to restart, it just went in a loop, never really booting up, just getting the to gray screen with the apple symbol, spinning the wheel, and then going black again, restarting, and repeat. So, I took it into the Apple Genius Bar, and they diagnosed a bad battery. I replaced the battery, and had them do a clean restore back to 10.6.8.
I got it home, and tried to do an install again. This time, I downloaded the installer, and put in on an external firewire drive, and attempted to do a clean install of Mavericks. I ended up with the same boot failure problem.
I went back to the apple genius bar, and even though the diagnotics said my harddrive was fine, they said in the troubleshooting list, that the harddrive with the first thing they suspected. So, I replaced the harddrive. I did the Mavericks install again from an external HD, and for a moment, everything was great. It booted up into Mavericks. But, after my first restart, the problem was boot failure was back.
After reading a few articles, I tried booting in Safe mode. That worked. I also ran disk repair on the HD and it looked great. Still, it won't boot up out of Safe mode.
After being very frustrated, I tried just installing snow leopard from the dvd, but the install keeps failing.
Not sure what to do next.

Micajah10,
rather than a hard drive problem, you might have a faulty internal SATA cable. Do you have an external disk enclosure, or a SATA-to-USB or SATA-to-FireWire adapter? If you can boot from your hard drive without problems when it’s external, but it remains problematic internally, then that could point to the internal SATA cable as the culprit.

After install update 10.7.4 my macbook pro doesn't boot

I have late 2011 13"Macbook Pro with Mac OS X Lion 10.7.2
After i update it to 10.7.4 it restarted and shutdown , i open it again only apple logo appeared for 1 min then it shutdown .
I need help to solve this problem.

I think the problem is i installed FIPS and then i update the system to 10.7.4 , so i need to remove it ;
but i have 2 problems now first i don`t have time to remove it , as only for 2 min and my mac shut down automatically. second i can`t find
/usr/sbin/fips
/System/Library/LaunchDaemons/com.apple.fipspost.plist
in the Macintosh HD
what i should do ?????

MacBook Pro doesn't boot after attempting hard drive install

Here is what happened:
Installed new hard drive and ram upgrade.
Hit power button. (Nothing on the display or keyboard turned on.)
Heard the optical drive turn on every few seconds.
Held down the power button until it turned back off.
Installed the old hard drive and ram so everything I did was reversed like I did nothing at all.
Pressed power button.
Heard optical drive turn on (no chime noise-just the drive.)
Still no display on (it remains black.)
Tried resetting the smc. No changes.
Tried to attempt a pram reset. Nothing.
Battery shows full charge. Charger shows green light when plugged into computer.
Idk what I could have done or not done to make this happen.
MacBook Pro 15" 3,1 early 2008 or earlier.
Running mountain lion.

I fixed the issue. I researched many many forums and found no help on any of them, and sorry-no help on this one either.
What solved the issue - and I hope this helps someone else who has the same problem:
1). Install new hard drive (with or without osx pre installed)
2). Remove all ram
3). Power on and wait 1 minute
4). Hold power button until it turns off
5). Install ram
6). Power back on
7). BOOM! It works again.

MacBook Pro doesn't boot (Kernel Panic), even CD/DVD doesn't work anymore

It is a very long story how I came to the point I am at right now, so I'll try to keep it really short:
My MPR stops booting and shows that Kernel Panic message (30s after starting the boot procedure with the grey screen and Apple logo), telling me to reboot. It even does not boot from CD/DVD anymore. Zapping PRAM doesn't help. Booting into Safe Mode doesnt work. Booting into Single User Mode and repairing the drive (/sbin/fsck -fy) did help a couple of times; scanning the system with Onyx and removing faulty preferences even helped a lot as well, everything seemed to work fine. But after the next system crash (happened during memtest procedure), I had the same problem again, this time even Single User Mode doesnt help. Booting from external FW-drive doesnt work. Every time: Kernel Panic.
Since I put in 4GB RAM four weeks ago (without any problems until last week), I replaced the new RAM with the old RAM. Still: Kernel Panic.
How I ran into the whole trouble? I replaced the original internal drive with a new 500GB WD drive. Now problems, until I accidently wiped the whole drive with BootCamp assistant.
At some point, I managed to boot from CD/DVD and (deep-)clean / format the whole internal disk, reinstalled 10.5.4, imported the settings and software from my old internal disk, and maybe f*ed everything up again by doing so. ONYX helped me to isolate a couple of preferences that went bad after that import, and after deleting them, everything seemed to be alright, especially after updating to 10.5.6. Until the system crashed next time, during a memtest. Memory seems to be ok though; as I already said, swapping it against the old RAM doesnt change anything, and TechTool didnt find anything. HD seems to be ok as well, neither Disk Utility nor ONYX nor TechTool did find any hardware fault.
After every crash so far, pcscd.pub was corrupted, with 17 instead of 16 blocks (Single User Mode fsck -fy fixed that), which is more than strange since I don't use any smart card stuff which that file is used for.
Now, even fixing that file doesnt help anymore.
Verbose mode shows that the boot process stops right after
Feb 15 18:00:43 localhost /System/Library/CoreServices/loginwindow.app/Contents/MacOs/loginwindow[57]: Login Window Application Started -- Threaded auth
Feb 15 18:0046 localhost mDNSResponder-176.3 (Sep 30 2008 16:59:38)[56]: starting
AirPort: Link Down on en1
It could be interesting to put back in the old internal drive, but I'd like to avoid that at almost any cost since putting back the cases lid was such a p. i. t. a. It doesnt seem to be necessary as the drive itself seems to be ok technically.
The thing that amazes me most is the fact that I can't boot neither from CD/DVD nor from external FW-drive(s) anymore.
Now I'm sitting here with a beautiful 2,5k$ brick and I'm wondering if anybody has a clue what I could do or who to ask (Apple Care won't be available before tomorrow). Thanks a lot in advance!

Alright, "Signal 4" means "illegal instruction", as "info signal" shows.
Rebooting in Single User Mode and doing another fsck -fy shows that everything is as before: a damaged pcscd.pub (incorrect block count) and a "succesful repair" with "FILESYSTEM MODIFIED". Exiting Single User Mode and continuing boot up works this time . Very strange. Verifying the volume using Disk Utility: everything is ok; some of the rights were corrupted though (in detail:
Die Zugriffsrechte unterscheiden sich für Library/Application Support/Apple/ParentalControls/ALRHelperJobs, Soll-Wert: drwxrwxr-x , Ist-Wert: drwxr-xr-x .
Die Zugriffsrechte unterscheiden sich für System/Library/LaunchDaemons/com.apple.usbmuxd.plist, Soll-Wert: -rw-r--r-- , Ist-Wert: -rwxr-xr-x .
Die Zugriffsrechte unterscheiden sich für Library/Application Support/Apple/ParentalControls/ContentFiltering, Soll-Wert: drwxrwxr-x , Ist-Wert: drwxr-xr-x .
Die Zugriffsrechte unterscheiden sich für Library/Application Support/Apple/ParentalControls, Soll-Wert: drwxrwxr-x , Ist-Wert: drwxr-xr-x .),
but repaired without problems. BTW, "Die Zugriffsrechte unterscheiden sich für..." means "Access rights differ...", "Soll-Wert" means "reference value", "Ist-Wert" means "actual value".
Testing CPU, RAM, video RAM and USB using TechTool Deluxe: everything is ok.
The crash log read as follows:
System Configuration:
Model: MacBookPro3,1, BootROM MBP31.0070.B07, 2 processors, Intel Core
2 Duo, 2.4 GHz, 4 GB
Graphics: GeForce 8600M GT, GeForce 8600M GT, spdisplayspciedevice,
256 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR2 SDRAM, 667 MHz
Memory Module: BANK 1/DIMM1, 2 GB, DDR2 SDRAM, 667 MHz
AirPort: spairportwireless_card_type_airportextreme (0x168C, 0x87),
1.4.8.0
Network Service: AirPort, AirPort, en1
Network Service: Parallels Shared Networking Adapter, Ethernet, en2
Network Service: Parallels Host-Only Networking Adapter, Ethernet, en3
PCI Card: pci168c,24, sppci_othernetwork, PCI Slot 5
Serial ATA Device: WDC WD5000BEVT-00ZAT0, 465,76 GB
Parallel ATA Device: MATSHITADVD-R UJ-857E
USB Device: Built-in iSight, (null) mA
USB Device: Apple Internal Keyboard / Trackpad, (null) mA
USB Device: IR Receiver, (null) mA
USB Device: composite_device, (null) mA
Problem Details
Sun Feb 15 15:18:32 2009
panic(cpu 0 caller 0x001A8CD4): Kernel trap at 0x640e50b7, type
14=page fault, registers:
CR0: 0x8001003b, CR2: 0x000000bc, CR3: 0x00e8f000, CR4: 0x00000660
EAX: 0x54d91630, EBX: 0x06884c04, ECX: 0x06725800, EDX: 0x00000000
CR2: 0x000000bc, EBP: 0x54d91668, ESI: 0x00000000, EDI: 0xffffffff
EFL: 0x00010246, EIP: 0x640e50b7, CS: 0x00000008, DS: 0x06720010
Error code: 0x00000000
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x54d91408 : 0x12b0fa (0x4592a4 0x54d9143c 0x133243 0x0)
0x54d91458 : 0x1a8cd4 (0x46280c 0x640e50b7 0xe 0x461fbc)
0x54d91538 : 0x19ede5 (0x54d91550 0x9 0x54d91668 0x640e50b7)
0x54d91548 : 0x640e50b7 (0xe 0x48 0x54d90010 0x64110010)
0x54d91668 : 0x640ecea0 (0xc1d00001 0x1000000 0x1000003 0x40)
0x54d916c8 : 0x640e1e2b (0x54d91858 0x6 0x0 0x0)
0x54d91828 : 0x640d4f12 (0x0 0x600d600d 0x7027 0x54d91858)
0x54d918e8 : 0x642a8942 (0xc1d00001 0x1000000 0x1000003 0x40)
0x54d91918 : 0x642b1d86 (0x46536000 0x1000000 0x88100090 0x3e)
0x54d938a8 : 0x64296056 (0x46536000 0x1000000 0x15 0x4653601c)
0x54d939a8 : 0x640cf572 (0x46536000 0x0 0x54d93ab2 0x80)
0x54d93a08 : 0x54f675a5 (0x6702800 0x0 0x54d93ab2 0x80)
0x54d93b38 : 0x54f68d74 (0x6702800 0x54f6c358 0x54d93bec 0x4)
0x54d93c08 : 0x54f54133 (0x6702800 0x1 0x0 0x13)
0x54d93c68 : 0x54f4d93a (0x6702800 0x2507 0x54d93d2c 0x65dfbe4)
0x54d93c98 : 0x40fc65 (0x6702800 0x65dfbe4 0x65dfbe4 0x0)
Backtrace continues...
Kernel loadable modules in backtrace (with dependencies):
com.apple.NVDAResman(5.2.8)@0x640ce000->0x6430dfff
dependency: com.apple.iokit.IONDRVSupport(1.5.2)@0x54f61000
dependency: com.apple.iokit.IOPCIFamily(2.4.1)@0x54e54000
dependency:
com.apple.iokit.IOGraphicsFamily(1.5.2)@0x54f45000
com.apple.iokit.IONDRVSupport(1.5.2)@0x54f61000->0x54f6efff
dependency: com.apple.iokit.IOPCIFamily(2.4.1)@0x54e54000
dependency:
com.apple.iokit.IOGraphicsFamily(1.5.2)@0x54f45000
com.apple.iokit.IOGraphicsFamily(1.5.2)@0x54f45000->0x54f60fff
dependency: com.apple.iokit.IOPCIFamily(2.4.1)@0x54e54000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
9E25
Kernel version:
Darwin Kernel Version 9.4.0: Mon Jun 9 19:30:53 PDT 2008;
root:xnu-1228.5.20~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F4238BC8)
Interestingly the Kernel version mentioned in the crash log is 9.4.0, while ONYX states it is 9.6.0.
Trying a reboot from CD and new clean install, then I'm planning to make extensive hardware tests.

My MacBook Pro doesn't boot up.

It just stays at the grey screen with apple logo and the spinning gear. I tried running in safe mode with the results (shift- command- V) and ion the end, it said
Cannot get audit control port
BootCacheControl: Unable to open /var/db/Bootcache.playlist: 2 No such file or directory
Since I checked other users problems, I believe it's because my Mac runs on low memory. Yes, I just have 5 GB of free space. Is this really the problem? Please give me a solution for this on what should I do, because my entire data is in without any backup.

Hi there, @eap3143.
Please check these links for information about your problem:
Apple Official Guide: http://support.apple.com/kb/ts1367
Apple Communities Thread: https://discussions.apple.com/thread/4399779?start=0&tstart=0

My macbook pro doesn't bootbeyond the grey screen with apple icon and spinning wheel.

My macbook pro doesn't boot beyond the grey screen with apple icon and spinning wheel. I used the "Option" button to access the Disk Utility function and run Repair Disk and Repair Disk Permissions. Should I restart my computer?

The following support article is somewhat outdated. Where it refers to booting from an installation disc, you should boot from your recovery partition (if running 10.7 or later) by holding down the key combination command-R at the chime.
Mac OS X: Gray screen appears during startup

My macbook pro doesn't turn and has a black screen. Fan is running though. Does anyone know what to do?

Does anyone have any advise when a Macbook Pro doesn't boot and has a blank screen? The fan is running but there are no backlights working.

Depending on your model MBP, see Article: http://support.apple.com/kb/TS2377 MacBook Pro: Distorted video or no video issues These computers were manufactured between approximately May 2007 and September 2008
If you are under warranty and/or have AC, give them a call.
Out of warranty, take your MBP to your local AS and/or AASP.

MacBook Pro doesn't want to boot when cd rom is connected

Hello,
I have an issue with my MacBook Pro (2009) model.
When I'm connecting CD-ROM (internal one) computer doesn't want to boot nither from DC ROM nor from HDD.
As soon as I am dissconecting CD ROM system is booting up without any problem.
Please advise.
Thanks,
Dubbster

Hi Dubbster,
Welcome to the Apple Support Communities!
I understand that your MacBook Pro is not booting when you have the Mac OS X Install DVD inserted. Do you get any boot options when you hold down the Option key during startup? Please reference the following article and let me know if you need further assistance.
Startup Manager: How to select a startup volume
http://support.apple.com/kb/ht1310
I hope this helps,
-Joe

HT201295 Late 2011 Macbook Pro refuses to boot. SMC reset doesn't work

Late 2011 Macbook Pro refuses to boot. SMC reset does nothing. Have tried bypassing SMC (nothing).
Magsafe light glows very very faintly (barely visible in a room with lights on).
Have tried reseating the battery connector. Battery indicator status button illuminates no LEDS (despite it being charged before failing).
The mac didn't get wet. Was using a non apple USB cable at the time to tether/charge iphone. Computer just dead after working fine.
Any ideas anyone. Logic board?
Many thanks and best wishes
Jamie

Is it a 15" or 17" MBP? There have been logic board issues with that model.
https://www.ifixit.com/Device/MacBook_Pro
For all models.
If it's a 13" take the bottom off and disconnect the battery:
https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Unibody+Late+2011+Battery+Repla cement/7649
So only do this through step #3!
Wait 10 seconds. Push the power button for 5 seconds. Wait 10 seconds. Reconnect the battery. Put the bottom back on don't screw it on just yet. Tape it temporarily in place and try to start it
Even if it's a 15" or 17" try this anyway. Usually when graphics on the logic board fails there will have been anomalies beforehand.

Mid 2006 Macbook Pro won't boot (from HD or optical)

My mid 2006 Macbook Pro will not boot from the hard disk, or from the internal DVD. I am currently running the latest version of Lion (10.7).
I tried searching the forums and found a similar issue here:
https://discussions.apple.com/thread/1687899?start=0&tstart=0
But that was with a Mac Mini. And it doesn't look like the OP issue was ever resolved. I am having the exact same problem.
When attempting a normal boot from the internal HD of the Macbook Pro. It will make the happy chime of a successful POST. It will display the Apple logo. And that's as far as she gets.
No spinning wheel, no error image, no nothing. Eventually the system will start spinning up the fans as if it were under load (this was after about a half hour of just letting it sit there).
Doing a verbose boot, it never went past this:
com.apple.driver.Apple.IntelCPUPowerManagement
Photo of verbose boot:
Here's what I've tried.
1. Bought a brand new battery (as the current one was at death's door)
2. Zapped PRAM (Apple + Option + P + R)
3. Reset SMC according to these directions: http://support.apple.com/kb/HT3964?viewlocale=en_US
4. Attempted to boot to my original Tiger (10.4) install DVD, only to stop at this point during a verbose boot (Apple V):
Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style
Photos:
5. I am able to put her in Target Disk Mode (hold T at boot). Then with a firewire cable I can connect it to my wife's Macbook 13" and I am able to run disk utility on it! Disk Utility did find and repair errors, however, it still refuses to boot.
6. I attempted to boot from my wife's Macbook 13" in Target Disk Mode. I put her machine in Target disk mode. Connected the firewire cable. Powered on my 15" MBP while holding the option key. Then I selected her drive as the boot disk... however it still refuses to boot even from a known working HD.
7. Finally, I swapped around RAM DIMMs with no change in behavior.
Help! I know she's an older gal (Laptop is 6 years old now) but I'm not exactly flush with cash and would rather not give up on her just yet.

My Mac started freezing (colored pinwheel) every time I tried using any application (i.e. Safari, iPhoto). After restarting for the 2nd time, it would no longer boot - makes start up sound but gets stuck on gray screen w/ apple icon. I tried resetting PRAM also - did nothing. I decided to reinstall OS; problem now is my HD is nowhere to be found! I am a tech dummy so this is way beyond my comprehension...I'm not seeing my HD from the Disk Utility either???
Side question...I backed up my files (mostly pics JPEG and videos) on DVD (had to compress to save). Why can't I open files on PC?

Macbook pro doesn't boot

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