Windows 10: Can’t boot into any operating system and shows “Missing operating system” error

Discus and support Can’t boot into any operating system and shows “Missing operating system” error in Windows 10 BSOD Crashes and Debugging to solve the problem; Hello, I installed Fedora and decided I didn’t like it, so I wanted to go back to Windows. I still had my Windows partition and GRUB wouldn’t show,... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by lesanae, Jul 6, 2019.

  1. lesanae Win User

    Can’t boot into any operating system and shows “Missing operating system” error


    Hello,


    I installed Fedora and decided I didn’t like it, so I wanted to go back to Windows. I still had my Windows partition and GRUB wouldn’t show, so I tried to make it show and messed up in the process, and ended up wanting to restore the Windows bootloader. I tried doing that using the Startup Repair and the Command Prompt in the Windows 10 bootable USB, but it didn’t work. I tried installing Windows on my main partition, but something happened and somehow I got the Missing operating system message when I booted. I tried to install Manjaro on my system but the Missing operating system error would show again. I tried installing Windows 10 on different partitions but that didn’t work either. I’ve tried to do all of the bootrec stuff (/fixmbr, /fixboot, /rebuildbcd) but they would not work and sometimes give me an Access denied error and other stuff, but other times not. I’ve tried making new EFI partitions, but to no avail, it would not work. I have no idea what to do now and it’s been hours. I’ve even done chkdsk and there’s no errors. Please help!

    :)
     
    lesanae, Jul 6, 2019
    #1

  2. Error Loading operating system

    I'm getting the BIOS System Configuration screen and at the very end

    searching for Boot Record from IDE-0..OK
    Error Loading operating system

    What can I do to make it boot?
     
    doradeno2003, Jul 6, 2019
    #2
  3. LionHeart1974, Jul 6, 2019
    #3
  4. Can’t boot into any operating system and shows “Missing operating system” error

    Error: "An operating system wasn't found. Try disconnecting any drives that don't contain an operating system"

    Hi Stephen,

    I realize the inconvenience you are facing in accessing the operating system. Now that you have me with you let me take care of this.

    Do let us know if you are able to see Windows 7/ Windows 10 operating system while rebooting the device?

    As you are unable to boot the operating system, this issue might have occurred when the boot files are missing or corrupted.

    I suggest you re-built the boot rec by following the below commands and check if it helps.
    You will have to use Windows 10/7 installation media to follow the steps to boot into Recovery Environment and try to rebuild BCD.

    Step 1: I suggest you to create an installation media for
    operating system using the media creation tool

    If system boots to Windows 10:
    Installing Windows 10 using the media creation tool


    If system boots to Windows 7: Download Windows 7 Disc Images (ISO Files)

    Step 2: After preparing the installation media, insert it hard reboot the device and follow the below:

    • Boot into Windows Recovery Environment using the Windows 10/7 installation media.
    • Click on Repair your computer.
    • Click on Troubleshoot and in the Advanced options.
    • Select Command Prompt. Type the following commands into the prompt and press Enter key after each command.
    • bootrec /fixmbr

    • bootrec /fixboot

    • bootrec /scanos

    • bootrec /rebuildbcd
    5. Restart the computer.

    NOTE: Modifying BIOS/ complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting
    from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk.

    Hope it helps. Reply to the post with an updated status of booting the operating system for further assistance.

    Thank you.
     
    Deepika Gowda, Jul 6, 2019
    #4
Thema:

Can’t boot into any operating system and shows “Missing operating system” error

Loading...
  1. Can’t boot into any operating system and shows “Missing operating system” error - Similar Threads - Can’t boot operating

  2. Missing operating system

    in Windows 10 Installation and Upgrade
    Missing operating system: Hi, I was having issues with my Windows not loading up user profiles when starting up. One of the recommendations was to do a fix of mbr where i was having an access denied error. This was solved by doing a bootsect/ntsys 60 command but did not solve the original issue....
  3. "Missing operating system" on launch

    in Windows 10 Installation and Upgrade
    "Missing operating system" on launch: Hello, I have been locked out of my Windows 10 Pc and need help getting back in. I was trying to open my bios to fix another issue with my USB ports so I went into settings, then to update and security, selected recovery, chose advanced setup and restarted my pc. I then chose...
  4. "Missing Operating System"

    in Windows 10 BSOD Crashes and Debugging
    "Missing Operating System": After the last Windows update I received an error message "Missing Operating System". The issue occurred when the system started to reboot after update. I did everything that I could, including the system repair, recovery from the system image. I used safe mode but cannot...
  5. Missing operating system

    in Windows 10 Installation and Upgrade
    Missing operating system: Hi, was using the windows media tool to download the files for my usb, so i could activate windows on a new computer im getting. But somewhere in the process, my operating system got deleted and i cant install windows again cause it says the i have to go back to the former...
  6. Operating system missing

    in Windows 10 Installation and Upgrade
    Operating system missing: i downloaded an update to a program i use at work, turns out it was a virus or malware and changed several registry files and removed admin access. My laptop then started downloading programs and installing them, opening several webpages, and trying to run a virus scan that...
  7. Missing operating system

    in Windows 10 Installation and Upgrade
    Missing operating system: I was having windows 10 and then I installed linux 25 on my hp 179TX PC.when linux installation was completed then I restarted the pc but windows option was not showing so i went in linux and was accessing /D: drive but it Was telling that windows was not properly shutdown...
  8. Missing operating system

    in Windows 10 Installation and Upgrade
    Missing operating system: Hi, after the automatic update of my laptop toshiba, there was an error when i boot my computer. Then, in the left top corner there was this message error : Missing operating system. So, i check on other tread and some people said to load the command on an usb device with...
  9. Missing Operating System

    in Windows 10 Installation and Upgrade
    Missing Operating System: When i turned on my PC this morning i was met with a black screen and missing os written in it. I thought bugger you MS. Little did i realize i had left my portable drive hooked up from last night. Unplugged it and all was back to normal. This may help you if you are stuck....
  10. Missing operating system

    in Windows 10 Installation and Upgrade
    Missing operating system: I am using build 10130 NL, today I got update to build 10240. After the update I have the problem "Missing operating system" . Anyone who know what is going wrong. I am using a ASUS X77J series laptop with SSD drive. Looking forward to some advice, above happened for the...