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Error at boot, 0xc000000F the boot selection failed because a required device is inaccessible

Answered Error at boot, 0xc000000F the boot selection failed because a required device is inaccessible

  • Friday, November 16, 2012 6:56 AM
     
     
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    Quite suddenly, when I try to boot Win7/64 SP1, the system hangs at the windows logo screen and does nothing.

    I must reboot to get out of it.  Booting into safe mode loads the various drivers, then hangs and does nothing until I reboot.

    Pushing F8 and choosing "Repair" tells me to boot the installation disk and gives this message.

    0xc000000F the boot selection failed because a required device is inaccessible

    Booting the installation disk loads the files, then gives me the Microsoft bar, and again hangs interminably until I reboot, so apparently I can't even do a repair or reinstall Windows.

    I installed a PCIe SATA controller, worked with it a bit, then physically removed it from the machine.  That's when all of this began. The device is no longer found by the BIOS.

    Elsewhere, I read that there's a boot device list to be had by pushing F12 at startup, but this does nothing for me. I get boot parameters by pushing F10, but nothing from F12.

    Can anyone suggest a way out of this?

     

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  • Friday, November 16, 2012 7:46 AM
     
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    N'mind.  Some thought suggested an inconsistency -- if a required device is missing, why even start to boot?

    which in turn suggested an intermittent problem, something that WAS there, but now is not. A cable loosened by all of the fussing?

    which suggested a general cable jiggling and tightening on the whole system

    which solved the problem. This should be marked "Fixed".

     
  • Friday, November 16, 2012 8:23 AM
     
     
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    There are many faults as of your computers hardware and software conflicts causes system stop at start.

    Try few methods:

    1. At system startup press 'Del' key for BIOS. Set BIOS to 'Failsafe defaults', exit saving changes, check whether system starts.

    2. If system hangs even after 1st method, let system restart from as many other ways your system has for example CD DVD, USB, another partition on hard  drive, alogether different hard drive please check these devices has bootable files whether OS install or OS itself or other bootable methods for example administrators password reset, Win PE, Lazesoft system recovery etc. should your system doesn't starts using these methods try 3rd method.

    3. Check whether your computer's all devies are connected where they were at operating system install because change of port for device whenever or for whatever reason fails to load device drivers mentioned in registry and system stops responding even at safe boot loading, these scenarios happen for detachment of device without uninstalling from device manager. Start computer connected devices your memory recalls where they were or if computer hangs disconnect devices one by one to such an extent computer has only power connection, keyboard connection, mouse connection and monitor connection, check whether system starts.

    4. If all external devices were removed except power, keyboard, mouse and monitor, shut off power supply of computer and open side panel of your server, unplug and plugin all wired connections one by one, check whether syste starts.

    5. Reset BIOS using jumper on motherboard, restart system.

    6. If system fails to start, backup all your files on hard drive before 7th method.

    7. Mostly because system fails to load specific device driver mentioned in registry at system startup, before system loads device drivers for all devices, operating sytem fails to detect CD DVD, USB etc. therefore try of reinstall from these devices fails unless system boots from these devices and load device drivers for CD DVD, USB etc. from bootable device and after loading these device drivers from these bootable CD DVD, USB etc. system could load Windows installation files and reinstall would succeed.

    truly,

    Aniruddha

     
  • Monday, November 19, 2012 2:17 AM
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    Hi,


    Glad to hear this issue has been solved. Thanks for sharing. We really appreciate your time and efforts. Hope your experience will help other community members facing similar problems.


    Regards,

    Vincent Wang

    TechNet Community Support