Windows 8 and 8.1 Forums


BOOTMGR is missing. Press Ctrl Alt Del to restart

  1. #11


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Quote Originally Posted by Brooklyn567 View Post
    As long as your internal drive starts up first there will be no problem, but i suspect once in a while its your external drive that starts first..

    There can be 2 boot options that can conflict..

    1: boot order priority

    2: Boot from add-on card first

    what model is your asus and do you have an add-on card for your external drives?
    Hi

    but the question is why does the PC boot at all?

    The PC is an ASUSTeK COMPUTER INC. CM6730, I'm not sure what you mean by addon card, do you mean a PCI card attached to the MB, if so, no the External Drives are attached to USB ports (1 x USB2, 1xUSB3) that are connected directly to the MB.

    Please let me know if you need more info.

    Regards

    Daniel

      My System SpecsSystem Spec

  2. #12


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    I dont know for sure why your pc is rebooting besides the reasons i indicated previously.

    But if you want to ensure that your OS starts normally after a reboot, then you should change your ext harddrive boot sequence.

    The only thing you can do to avoid a windows update reboot, is to disable automatic updates, and the updates will not force a reboot.

    If it still reboots, then someting else is doing it. Crash, virus, power issue, hardware failing...

    Your particular model PC has had 4 Bios revisions since june of 2012, each time the improvement was system stability.

    OS: Select OS Windows 8 32bit Windows 8 64bit Windows 7 32bit Windows 7 64bit Vista 32bit Vista 64bit WinXP WinXP 64bit DOS Others
    There are 3 download servers available on ASUS Download Site - Global, China and P2P. Each server provides exact the same content no matter where you download from, except for the speed which you are connected to.

    64 files found

    BIOS (8)
    Version 0507
    Description BIOS 0507
    Improve system stability.
    File Size
    3,94 (MBytes) 2013.02.01 update
    Download from
    Global (DLM) Global

    Version 4101
    Description BIOS 4101
    1.Improve system stability.
    2.Enhance compatibility with some USB devices.
    3.Fixed Nvidia GTX 680 hang when runing with UEFI driver.
    4.Support new CPUs. Please refer to our website at: ASUSTeK Computer Inc. -Support- CPU Support
    File Size
    3,02 (MBytes) 2012.12.11 update
    Download from
    Global (DLM) Global

    Version 4002
    Description BIOS 4002
    Improve system stability.
    File Size
    3,02 (MBytes) 2012.07.12 update
    Download from
    Global (DLM) Global

    Version 3903
    Description CM6630 BIOS 3903
    1.Improve system stability.
    2.Improve memory compatibility.
    3.Support new CPUs. Please refer to our website at: ASUSTeK Computer Inc. -Support- CPU Support
    * Enable support for Intel Next Gen 22nm Processor E1 stepping MP version CPU.
    File Size
    3,01 (MBytes) 2012.06.15 update
    Download from
    Global (DLM) Global

    Version 0512
    Description P8H61-M-PRO(CM6730) BIOS 0512
    Improve system stability.
    File Size
    2,34 (MBytes) 2012.01.06 update
    Download from






    If I think of anything else Ill repost, but This is about all I can do..
      My System SpecsSystem Spec

  3. #13


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Hi

    Okay, perhaps it's a combination of the two, poor system stability and the boot sequence, it is definitely not
    windows update.

    I'll run the bios updates and have a look at the boot sequence in the BIOS although I do not recall seeing any of the attached drives being available in the boot sequence.

    This is going to take me a couple of days, I will post back when I have done it.

    I appreciate your help and advice.

    Regards

    Daniel
      My System SpecsSystem Spec

  4. #14


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Hi

    I got it done sooner than I thought, I have updated/Flashed the BIOS and I have disabled all except the first two Boot sequence options, so I only have DVD then Hard Drive.

    Julian asked me to post a screenshot of CrystalDiskInfo, I would be interested to see if he could see any potential erros shown.

    Cheers

    Daniel
      My System SpecsSystem Spec

  5. #15


    Spain
    Posts : 39
    Windows 8 Professional x64


    Quote Originally Posted by daniellouwrens View Post
    Hi

    I got it done sooner than I thought, I have updated/Flashed the BIOS and I have disabled all except the first two Boot sequence options, so I only have DVD then Hard Drive.

    Julian asked me to post a screenshot of CrystalDiskInfo, I would be interested to see if he could see any potential erros shown.

    Cheers

    Daniel
    Hmm, can't see anything wrong there... Let me give the problem some more thought....
      My System SpecsSystem Spec

  6. #16


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Hi

    Thanks, I would be interested in any ideas you have.

    Cheers

    Daniel
      My System SpecsSystem Spec

  7. #17


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Hi

    this has happened again, twice this week and I was thinking,

    "could this be because my PC has too many devices hanging from it"

    If this could be the cause how can I tell, is there software that will reveal an over-burdened power supply?

    Cheers

    Daniel
      My System SpecsSystem Spec

  8. #18


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    Do you have a UPS connected to your system?

    I still believe your computer is trying to boot from the external drive.

    Since you always leave those drives connected you should make sure that in your boot order that the USB Boot is set to the last option.

    If youre having power glitches and do not have a UPS on your system then thats causing your random reboots.

    You can get a basic UPS for about $40.00 it doesnt have to have large capacity, it just has to absorb annoying power glitches.

    A basic UPS will give you at least 20 - 30 minutes of continuous operation, though you may only need it for less than a second.

    Whats the size of your computer power supply? 350Watts, 400Watts? more?
      My System SpecsSystem Spec

  9. #19


    Posts : 214
    Windows 8.1 x64 with 8.1 Update


    Quote Originally Posted by Brooklyn567 View Post
    Do you have a UPS connected to your system? No I do not

    I still believe your computer is trying to boot from the external drive.

    Since you always leave those drives connected you should make sure that in your boot order that the USB Boot is set to the last option.

    Boot to USB has been disabled in the BIOS, only the DVD Drive and Hard Drive are a part of the boot order.


    If youre having power glitches and do not have a UPS on your system then thats causing your random reboots.
    The Power company says not!!

    You can get a basic UPS for about $40.00 it doesnt have to have large capacity, it just has to absorb annoying power glitches.

    A basic UPS will give you at least 20 - 30 minutes of continuous operation, though you may only need it for less than a second.

    Whats the size of your computer power supply? 350Watts, 400Watts? more?

    I don't know, the PC is still under warranty and if I open up the case I void the warranty.
    Cheers

    Daniel
      My System SpecsSystem Spec

  10. #20


    Maryland USA
    Posts : 758
    Windows 8 & Windows 7 Dual Boot


    The power glitches can come from various sources not necessarily from the power company.

    A UPS is a very good and cost effective investment to make for your expensive hardware, not to mention keeping your data safe from damage. If you dont want to open your computer to avoid voiding warranty, lets go this route.

    If still no boot manager, then we can keep the ext harddrives unplugged for testing, if still no boot manager error, the the problem is internal and you will need to send it back, or open the system to look for a loose power cable.
      My System SpecsSystem Spec

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