Windows 8 and 8.1 Forums

Windows 8.1 boot error "Operating system not found"

  1. #1

    Posts : 3
    Windows 8.1

    Windows 8.1 boot error "Operating system not found"

    Hi I reinstalled windows 8.1 on my Samsung NP530U3C-A10EE. And now the problem this that I can't boot it without usb stick that contains windows installation files. I can boot up windows and remove the usb stick evertything is working perfectly, but if I try to boot up win without usb, it gives error "Operating system not found. Press CTRL+ALT+DEL to restart". VOLUME C:\ is one where windows are installed (SSD), System Reserved is the system partition that windows create automaticaly (SSD), volumes D:\ and F:\ are my hdd volumes D:\ is empty & F:\ is stored with my personal files (photos, music etc.)

    P.S if i make C:\ active I can't boot up even with usb stick plugged in...

    Maybe someone knows the solution? Thanks for responses.
    Attached Thumbnails Attached Thumbnails Untitled.png  

      My System SpecsSystem Spec

  2. #2

    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64

    You can try from Admin command prompt:
    1. diskpart -> select disk 0 -> select par 1 -> inactive -> exit
    2. bcdboot C:\Windows
    3. shutdown
    4. swap the cables between disk 0 and disk 1. (Make your Windows to be disk 0)
    5. From BIOS, set boot priority to this disk 0
    6. Reboot without the USB connected.

    Hope this helps !!!
      My System SpecsSystem Spec

  3. #3

    Posts : 3
    Windows 8.1

    I managed to do that windows would be recognised and change the boot place to the right one. But main problem still is that I cant boot from ssd because it is not shown in BIOS. Any suggestions? @topgundcp I dont want to make any changes with hardware because the pc isnt mine and I dont want to break it completely
      My System SpecsSystem Spec

  4. #4

    Try this: EasyBCD - NeoSmart Technologies

    EasyBCD to set up the boot on your Windows Partition.
      My System SpecsSystem Spec

  5. #5

    Posts : 3
    Windows 8.1

    Ok, I left the ssd and went back to hdd, installed win on hdd and it still not works... I can only boot them up with usb stick plugged in. I tried
    bootrec c:\windows /s c:
    still not working, also i have tried a lot of diffrend guides, but no one was helpful...
    easybcd cant help either
      My System SpecsSystem Spec

  6. #6

    Posts : 1,121
    Windows 8.1 x64

    A 24 GB SSD is very small for an OS install. Is that device an mSATA which came with the computer?

    According to your Disk Management picture, the system is booting to the mSATA. Maybe there is something still on the Flash Drive it needs to complete the boot.

    If you went back to the Hard Drive, because of all the active partitions, it may still be configured incorrectly, or it may still be booting to the mSATA. Another Disk Management picture might be helpful.
      My System SpecsSystem Spec

  7. #7

    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1

    Physically disconnect the other HD drive.
    Make the Windows 8 HD, disk0 & first HD boot in BIOS.Also connected to the first Sata port on the MOBO.

    than do a Start up Repair IF NEEDED.
    Automatic Repair - Run in Windows 8
    Note: You may need to do startup repair 3 to 4 times.
    Startup Repair - Run 3 Separate Times - Windows 7 Help Forums

    When Windows is booting OK, Reconnect the other HD drive, as Disk1.

    Mark the all other HD Drives INACTIVE
    Partition - Mark as Inactive - Windows 7 Help Forums
      My System SpecsSystem Spec

Windows 8.1 boot error "Operating system not found"
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