Macbook Pro freeze after login (Yosemite)

ok nob just wanting a bit of help g f y s

See my Jan 12/13th posts to this thread.

Definition of a 'Nob': A person or persons that does not know how to use search functions to find forum threads related to their issue.

OK so I finally got my macbook back up and running after 2 weeks of ****.

I understand that in these forums some issues have helped some people while others like myself were slowing getting worse like being stuck in quick sand.

Heres what I did

1. Backup everything onto a separate drive.

2. If you have a spare drive backup everything again (I wanted to make sure I had everything backed up)

3. Go to your local mac repair shop who will charge about $30-$50 to erase your disk and reinstall a new Yosemite operating system.

No more issues.

It should not be necessary to pay somebody else to erase your disk and reinstall Yosemite. Even if your machine will not boot normally, it should boot into the Recovery Partition, and then you can easily do such things yourself:

OS X: About OS X Recovery - Apple Support

I understand that I didn't need to go to a repair shop to wipe my disk and reinstall Yosemite.

I ran the internet repair and was able to reload Lion however after I used migration assistant to reinstall my profile and files, I backed up the system then the system shat itself and stopped loading at all. No logo just a grey screen and the fans running fast and the laptop running hot.

The laptop essentially looked dead. No access to Recovery Partition No access to Internet Recovery nothing. So that was not an option otherwise I would not have gone to the repair shop. This also meant that I was unable to run disk permissions and NVRAM did not fix the issue.

I also chose to go to a repair shop because I do not have an physical operating system on USB or disk available to load.

After 2 hrs at the shop my macbook pro was back up and running and all for $30!

Cant put a price on the hours that I spent trying the numerous fixes on these forums.

Seriously I saved more than $30 by taking it to the shop.

Hi we have to do the following after installing this zip found in a different forum http://www.hammen.net/downloads/yosemiteboothangfix.zip

• Restart in safe mode, then login
• Disable the wireless in the top right
• Restart normally (It will appear to sit there doing nothing (as before) if you tap ‘space’ and ‘enter’ keys it will then login
• Enable wireless

Hi,

I'm on a macbook air mid 2013 - up to date Yosemite.

I was using Android Studio with a phone connected and I tried to open the Android Emulator when the Program crashed.

I restarted the computer and now it freezes after I login.

I tried all the solutions above and none of them worked. I'm not able to enter safe boot mode as well.

I could only boot from boot camp and backup some stuff using windows.

Anyone has come with some different solution that worked?

You guys are lucky. Mine freezes at login overnight. I don't have to close the lid. Frustrating as **** especially when work is in progress.

As I have said before all system issues may be slightly different and the fixes in these forums may or may not be useful for your particular situation.

In my case most solutions did fix the errors (sometimes only for a day or for a week).

It turns out that I had another issue to deal with that wasn't readily apparent at the time.

After I had installed Yosemite I had the slow start up, over heating, the fans working overtime and general freezing.

As my Macbook Pro is a 2011 model it is prone to have a potential GPU failure due to excessive heat. The heat that was being generated due to the Yosemite issue eventually sealed the fate of my machine. I had none of the telltale signs of Blue screen with Black lines, I just had freezing, overheating and excessive fan usage.

Yes you could argue the point that it would have failed regardless of Yosemite and I agree.

That being said it takes me back to the point that while the symptoms seem to be similar if you're not getting any satisfaction from the provided solutions then go and seek some expert assistance preferably from an authorised apple repairer.

Similar issue with a Macbook Pro but I have had Yosemite running successfully for awhile now and not sure what caused this without digging into system/debug logs...

After login, the install progress bar never made it past 20% and hung...forever

Tried all the standard keyboard start up techniques, please visit (OS X Yosemite: Ways to start up your Mac) Be sure to visit the links at the bottom too:

CMD + OPT + R + P (many, many, times...no luck)

CMD + T

CMD + SHIFT + V

CMD + R

CTRL + SPACE + RETURN (did not work either)

Tried all these techniques with all the prescribed steps associated to each start-up = no fix

Tried the "unsigned" extensions steps previously recommended:

<terminal>$system_profiler SPExtensionsDataType

keyboard shortcut: then CMD + F <search for Not signed> extensions

#note did not finding anything not signed by Apple

Google found this gem as I was pretty sure this had something to do with FileVault

https://derflounder.wordpress.com/2011/11/23/using-the-command-line-to-unlock-or -decrypt-your-filevault-2-encrypted-boot-drive/

<terminal>$diskutil corestorage list

or

<terminal>$diskutil cs list

~note I could see the encrypted volume...duggggghhh! My cat must have enabled it

Brain LED started to flicker...just barely (my problem was definitely related to filevault)

I pivoted back to my old friend: CMD + R

Went into disk utility

Selected main HDD

From disk utility file menu, choose UNLOCK

From same menu, choose DECRYPT

***NOTE, DO NOT UNPLUG YOUR MAG or POWER CABLE AS THIS WILL STOP DECRYPTION***

After decryption completed (for the record, since I could not get into the O/S, I had to keep booting into recovery tools, then opening up TERMINAL (in the File Menu) and checking by issuing this command <terminal>$diskutil cs list (just read the derflounder link above...it explains everything)

Reebooted...

No luck

Then, I remember I had a USB flash drive (e.g., 128GB stick) that had the Yosemite installer on it, turned off the Macbook Pro, inserted the stick, OPTION key down, power on, selected Yosemite Installer...

Long story short I was down for a day but the last step finally repaired my installation and I am now able to reboot normally and logon. going to do some backups, etc before I enable FileVault again

Good luck

There is another thread here that worked for me. In particular, the following:

I have an open ticket with Applecare Enterprise Support. It is a known issue that has been reported to the product development team with no ETA for a fix. The procedure that has worked every time for us and has been the recommended procedure for temporary resolution is as follows in Single User Mode.

/sbin/mount -uw /
rm -rf /System/Library/Caches/*
rm /private/var/db/BootCache.playlist
reboot

If you prefer, you can access the Terminal via the recovery partition rather than through Single User Mode. I've tried it once, and it worked. Other tricks including Safe Boot are a waste of time if you have this particular issue.

This seems to have worked for me as well.

In my case it was CmUSBMassStorage.kext from Wibu Codemeter.

i have this problem too. please help apple

I have the same issue with Yosemite on a Mac Mini (late 2012) with 16gb RAM. Applecare has been unable to figure out what is wrong for almost 5 months of ongoing sporadic freezes. They first recommended the RAM upgrade (from 4 to 16gb) which didn't fix anything. They have now recommended I erase & reinstall everything.