After selecting "login as guest" MBP reboots and only boots in OS X Utilities mode

Yesterday, I started my mac. I wanted to use the guest account and my mac told me to reboot for that option. From that time, my mac only boots in OSX Utilities mode and there's no way to get there out.
When I used detailed login stats, it seems that it's unable to open the var/db/bootcache,.playlist (no such file or directory)
I'm running 10.8 - my disc is encrypted
Try to find some help on Google without any results

Hey!
Of all the things you tried you didn't try these things:
go to the recovery partition by hold CMD+R while booting.
Once there, go to the Disk Utility area and Verify and repair your disks and permissions
after doing that with successful results, go and reinstall Mountain lion.
This may or may not fix your issue.
if you don't want to do that just yet, you can see if it is an application that you have downloaded that may be the issue. simply go to system preferences and choose Users and Groups and create a new user.
Log in to the new user and see if your issue persists.
When is save mode go to system preferences Users and Groups and go to the Login items and uncheck all of them.
These are the steps I would have taken first. Try these ones and see if you don't fix your issue. If you figure out what app is making you constantly restart, please let us know what it is so others may be able to solve the issue faster.

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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.
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My external hard drive will not open and only shows up in Disk Utilities. When I try yo repair it, it give me and error of invalid sibling link. How do I fix my external hard drive?

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Grey screen globe, folder question mark and only media folder in disk utilities?

So 2 days ago my I Mac 10.5 OS 2007 or 2008 ...started freezing up....never happened before...then yesterday a grey screen popped up with the folder and question mark..... i was able to get it up onyy once yesterday and today its like if everything is gone....again with the grey screen. I found my installation disks...popped the first one in and when i get to disk utility there's no hard drive for me to select only media the installation disk and some Asian script that looks like it may be a disk?.... idk what to do....is it done for?

Your hard drive is shot and needs to be replaced.
Question (?) Mark, Blinking Folder, or Gray Screen at Startup
These are related but not identical issues. Their causes are outlined in Intel-based Mac- Startup sequence and error codes, symbols. Solutions may be found in:
A flashing question mark appears when you start your Mac
Mac OS X- Gray screen appears during startup
In most cases the problems may be caused by one or more of these:
a. Problem with the computer's PRAM - See Resetting your Mac's PRAM and NVRAM.
b. Boot drive's directory has been corrupted - Repair with Disk Utility.
c. Critical system files are damaged or deleted - Reinstall OS X.
d. The disk drive is physically non-functional - Replace the hard drive.
Note that the information I have provided is what Apple recommends, If other users suggest different solutions than found here, then be sure what they recommend does not impact on your warranty, if any, or ability to get continuing Apple service.
Please don't start removing drives or changing cables unless you know what you are doing and have exhausted other non-invasive alternatives outlined here. If you perform any work yourself that is unapproved by Apple, then you will void any warranty you may have and lose all further Apple Support.
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
The main difference if you are using Lion or Mountain Lion is that you must first boot from the Recovery HD. Simply boot from the Recovery HD to perform the above.
Reinstall Snow Leopard Without Erasing The drive
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install Mac OS X 10.6.8 Update Combo v1.1.
Reinstalling Lion/Mountain Lion Without Erasing The Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
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Message was edited by: oursjm

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Ok, well I installed updates to my graphics driver, After Effects, and Windows, and unfortunately nothing worked, but from reading other forums, when I am using After Effects I should see QT32server.exe right? That doesn't show up in processes, but also I installed Premiere Pro to test dynamic link, and I always get an error "Failed to connect to Dynamic Link Manager." and when I hit Ctrl + Enter it says the same thing. ( I actually don't know what that hotkey does ) any ideas at all would be very much appreciated
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Message was edited by: Jeremiah1119

How to configure X220 to ignore power button and only boot via fingerprint reader?

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Good evening.
My specifications/environment: I have a Macbook Pro 17" 2009 model running Snow Leopard 10.6.8. The internal hdd had 2 partitions, one for Mac and one for Bootcamp.
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I encrypted my MBP harddrive with the new FileVault feature. Recently my MBP developed an issue where it would hang a while on the spinner when cold booting, then just reboot - and then boot just fine.
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After selecting "login as guest" MBP reboots and only boots in OS X Utilities mode

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