Windows 8 and 8.1 Forums


"Operating system wasn't found" DELL XPS 420

  1. #1

    "Operating system wasn't found" DELL XPS 420


    I have a Dell XPS 420 and I've just bought an SSD for it. Every time I boot the machine I see "Operating system wasn't found" now, despite having booted into Windows successfully just before.

    The only change I made was connecting a standard SATA 2TB drive - which it boots into fine - but now when I have removed the 2TB drive I cannot boot onto the SSD.

    Any suggestions? Thanks!

      My System SpecsSystem Spec

  2. #2


    Hafnarfjörður IS
    Posts : 4,376
    Linux Centos 7, W8.1, W7, W2K3 Server W10


    Hi there

    a) Is the machine UEFI or not
    b) how did you copy the OS on to the SSD.
    c) How are the disks formatted - MBR or GPT.
    d) (Should really be at the top so question -z !!) what OS are you using.

    Usually with these computers there's a BOOT menu you can get to from the BIOS - you don't need to go into the full BIOS - there's often something like ALT + F9 to get into a boot menu. Here there's often more disks than you will see in the BIOS settings -- you'll see things like UEFI file.

    As a starter try and insert a windows install / recovery disk -boot from that and choose REPAIR windows. If you don't have a dvd device there's plenty of ways of writing the install / recovery system to a USB.

    We need more info before proceeding here.

    Cheers
    jimbo
      My System SpecsSystem Spec

  3. #3


    Quote Originally Posted by jimbo45 View Post
    Hi there

    a) Is the machine UEFI or not
    b) how did you copy the OS on to the SSD.
    c) How are the disks formatted - MBR or GPT.
    d) (Should really be at the top so question -z !!) what OS are you using.

    Usually with these computers there's a BOOT menu you can get to from the BIOS - you don't need to go into the full BIOS - there's often something like ALT + F9 to get into a boot menu. Here there's often more disks than you will see in the BIOS settings -- you'll see things like UEFI file.

    As a starter try and insert a windows install / recovery disk -boot from that and choose REPAIR windows. If you don't have a dvd device there's plenty of ways of writing the install / recovery system to a USB.

    We need more info before proceeding here.

    Cheers
    jimbo
    Cheers Jimbo. It looks like it was formatted as GPT. With a bit of assistance I've done it MBR. Cheers for your time though - it's really appreciated!
      My System SpecsSystem Spec

  4. #4


    Jimbo's the best!
      My System SpecsSystem Spec

"Operating system wasn't found" DELL XPS 420
Related Threads
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...
operating system wasn't found in General Support
hi , yesterday i try to move memory from the D: drive to the main C: drive.. i use windows 8 and i try to do it with the partition of windows 8 (win tab +R). than i shrink the space of the D drive and cant move it to the C drive so finally i just take the shrinking memory and make new drive F.....
I have a multiple operating system and used to get the blue graphical boot menu with a rectangle with the name of each operating system in it. After a few boots it went back to the text menu, and only returned a couple of times. Is there a way to get the graphical boot menu back permanently? It...
Is there any way to enable it or to be able to find it?
Solved "Missing Operating System" in General Support
I'm selling my PC and long story short I went through thorough steps to ensure that I didn't leave any traces, I didn't do a clean OS install or format because I had a digital copy of windows 8 via upgrade and after using CCleaner to free space, uninstalling unneeded software, and manually removing...
Solved Operating system not found in General Support
a friend of mine had a dual boot of windows 7&8 then, he tried to remove windows 8( it's partition was active but windows 7 wasn't active), he first deleted win8 from msconfig then tried to delete the partition of windows 8( but Disk management didnt allow him neither easeus partition manager did,...
Hi, I recently got an Exopc, and they had set it up as a dual-boot, with Windows 7 64-bit and Window 8 customer preview (32bit). When I initially got it, and powered it on, I'd get the blue, graphical "Choose your operating system" page, and I initially chose to go to Win8. Later, I chose...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook