Computer will only start if I hit F12 and go to"Windows boot manager"

  1.    16 May 2018 #1

    Computer will only start if I hit F12 and go to"Windows boot manager"

    Every time my system starts, it goes to a black screen that says something like "no OS detected; press any key to continue." When I do that, it keeps going back to the same screen. The only solution I've found is to hit f12 and in the bios options, starting it in "windows boot manager" which then takes me to Windows w/ my different user accounts. I've tried in BIOS various options and combinations of secure on/off, legacy mode, UEFI, and finally "restoring to defaults," which used to work, but now even that will take me to the same black screen, and so every time I restart my computer I have to do this. I've looked at disk management (I don't understand what I'm about to say) and I see there is one Disk 0 w/ a GPT partition scheme w/ 4 partitions (including recovery, EFI, (C:) in NTFS, and something not labelled. Almost all 450 gigs are on the (C:) and it says all partitions are healthy, though I didn't purposely partition my hard drive and know nothing about it. I have a Dell Inspiron 13 using Win 10 Home. Any help appreciated,
      My ComputerSystem Spec

  2.    16 May 2018 #2

    Welcome to the forum can you post a screen shot from diskmanagment showing all the details so we can see
      My ComputerSystem Spec

  3.    18 May 2018 #3

    Thanks for the welcome! Shortly after posting that, I switched to a one time boot of UEFI mode w/ secure boot enabled (apparently it was disabled) and for some reason that appears to have fixed the issue, or at least I don't have to do a one time boot every single time I restart the system! I think the default is legacy mode though, so even though it is starting up now, it doesn't have the default bios settings.

    Does anyone know why this might be? I'm also experiencing other issues w/ this laptop about which I am going to make another post cause it's a whole other topic (I think).
      My ComputerSystem Spec

  4. Posts : 21,793
    windows 10 professional version 1607 build 14393.969 64 bit
       18 May 2018 #4

    1) As Samuria commented please post an image of disk management:
    Widen each the Status and Volume columns.
    Make sure the text in each row is in full view and that none of the characters are cut off by the column width.
    Disk Management - How to Post a Screenshot of | Windows 10 Tutorials
    Take Screenshot in Windows 10 | Windows 10 Tutorials

    2) Download and install the Minitool Partition Wizard > post an image into the thread:
    MiniTool Partition Wizard Free Edition - Free download and software reviews - CNET

    3) Run the BETA log collector and post a zip into this thread:
    Use the text and images in this link in case there is a problem runnign the beta log collector: (post #5)
    DM Log tool problem Solved - Windows 10 Forums

    4) Update the system specs in the "My Computer" section:
    System Specs - Fill in at Ten Forums:
    System Specs - Fill in at Ten Forums | Windows 10 Tutorials
    In the left corner below in your post you find 'My System Specs'.
    After clicking it you can find a link a little below that says 'Update your System Spec', click on this link to get to the page where you can fill in your system specs.
    System Info - See Your System Specs - Windows 7 Help Forums

    Include PSU. cooler, case, peripherals and anything attached to the computer by wired or wireless (mouse, keyboard, headset, printer, xbox, port replicator, docking station, USB wireless network card, etc.)
      My ComputerSystem Spec


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