Mac will not boot up - stuck in safe mode

Hi, my mac recently froze so I decided to hard-reset it in order to re-boot it quickly.  After it turned off, I tried to restart it but it sat on the grey screen with the spinning circle for at least 15 minutes, so obviously something is wrong.
I looked up the support section and it recommended I try safe boot, to reset NVRAM/PRAM, or to start from an install disk.  At this point I'm only on safeboot mode but it does not seem to be working.  I have run the safe boot in verbose mode but it has been running for about 45 minutes and not much progress..
Right now, the last line showing is "SATA WARNING: Enable Drive PHY PM failed".  That line has been repeated 4 times.  I'm not an expert but I think that means it's not working.
Any ideas/help from this fine community?  Thanks.

That means the internal drive has failed, or there's some other hardware fault. What backups do you have?

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    It will only start in safe mode. Will not go into recovery mode either. I just get a white screen.
    I have tried:
      Removing all cables and trying to start in recovery mode.
      Resetting the PRAM
      Fcuk
    I have not been able to do the "repair disk" because it is not available in safe mode, and cannot open recovery mode! 
    CAN ANYBODY HELP ME PLEASE??????? I don't know what to do now. Thanks

    Also depends on what you mean, what the red lights inside are showing, whether it is bad system drive, video card, SMC, whether you can get into Mountain Lion Recovery or not. And whether you hear the chime, it powers on or not.
    Unplug everything. No power or USB connected.
    Remove all the drives and see if you get the "?" on startup.
    If you had made a clone of your system and have that 'sittin on shelf' now is the time to use it.
    Hit power button for 10 seconds. Wait a minute. Reconnect bare basics (power, video, kb/mouse)

  • Yoga Tablet 2 Windows 8 will not boot up, stuck at a flickering screen

    I was installing Lenovo's firmware updates from their page for my device and in the middle of installing the BYT Platform Drivers for Windows 8.1, the tablet started went black.  Then it went into some kind of flickering screen like it was trying to turn on and off.  I left it alone and the next morning it was working fine.  But when I came back in the evening, it was completely turned off again.  I tried to turn it on, got the Lenovo logo, then it went into flickering on/off again.  It still will not boot up.  Any suggestions?? Help! 

     "The drive where Windows is installed is locked. Unlock the drive and try again." 
    Background:
    First encountered on Restore of backup image (ATI-WD) on RAID 0 Two drive [SSD] array
    Fixed: Using WINDOWS 7 Installation Disc - Repair Option
    Comment:
    During many WIN 8/WIN 7 installations on 4 different drives (on my own computer) MULTIBOOT (up to 7 O/S's) with BACKUP/RESTORE operations - WINDOWS 8 Installation Disk Repair has NEVER solved a startup problem
    MICROSOFT should be ashamed that a feature that WORKED with WIN 7 was not brought forward to WIN 8 Installation Disk. Those that don't have one, borrow one (Using repair should not infringe any rules)
    My Hobby is installing O/S's:
    One drive has WIN 8.1 PRO Preview, WIN 8 PRO, WIN 8 Release Preview-64,   WIN 8 Release Preview-32,  WIN 8 Consumer Preview- 64, WIN 7 - 32, WIN XP - 32 [EasyBCD ver 2.2 essential]
    You need to be an enthusiast to install XP with SATA AHCI (Slipstream SP3, load AHCI driver on install)
    Happy computing, WIN 8 Great, WIN 8.1 definitely worth having
    Additional Note:
    With WIN 8 PRO and WIN 8.1 Preview Installation Disks, one is presented with:
    Repair Computer/Troubleshoot/Select OS to repair (Forced to repair one O/S at a time)
    Result: Diagnosing your PC/Attempting Repairs - Where it hangs with dotty circle, going nowhere... [Requiring switch OFF - no ctrl+alt+del
    With the WINDOWS 7 Installation Disk - All partition entries are Recovered (Except XP) in one operation and quickly
    Repeat: What are M'soft thinking and doing about this anomaly?

  • Computer will not boot up correctly in any mode.

    Hello,
    I have a Compaq Presario CQ62 with Windows 7 that will not boot up to my log in screen and it does not matter what mode I put it in..safe..etc. I have tried everything I know to do ...like system recovery in the recovery manager. I have no recovery disk or anything. Any help

    That means the internal drive has failed, or there's some other hardware fault. What backups do you have?

  • Firefox will not open even in the safe mode

    Started with the addition of beta 4 where gmail would not open and it froze firefox. Added whatever the new addition was yesterday (3/14/11) and then firefox would not even open. Tried safe mode but it still will not open. Error message below

    Do a clean (re-)install:
    * Download a fresh Firefox copy and save the file to the desktop.
    * http://www.mozilla.com/firefox/all-beta.html
    * Remove the Firefox program folder before installing that copy of the Firefox installer.
    * Don't remove personal data if you uninstall the current version.
    * It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
    Create a new profile exclusively for the Firefox 4 version and create a desktop shortcut with -P "profile" appended to the target to launch that profile.
    * http://kb.mozillazine.org/Testing_pre-release_versions
    * http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
    * http://kb.mozillazine.org/Shortcut_to_a_specific_profile
    * http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox

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