Windows 10: operating system not found on inspiron 7720

Page 1 of 2 12 LastLast
  1.    31 Mar 2016 #1

    operating system not found on inspiron 7720


    Hello guys,

    First of all i would like to apology for my english wich won't be good i think since i am French and not English speaking native.

    My Laptop is Dell Inspiron 7720 and i had Windows 10 working on it.

    When a tried to reboot my laptop into "factory fresh start" using the windows 10 recovery system it worked properly.
    After the process i used ccleaner to clean all the previous data (i don't know if it's important to mention).
    After my first restart i was in windows 10 recovery system where i tried to "factory fresh start" again since it told me that "an error occur during the starting process" but this time i chose "clean also all the hdd drives" but it took too long (40 minutes for just 1%).

    So i turned off my computer and since then, it can't load windows with only the dell logo on my black screen (sometimes with a loop of quick analysing stuff) and when i try to boot from bios with every possible option (alt F2 and alt F12) it continuously tells me in a black screen "operating system not found".

    Do i have any way to fix it?

    Ater some research on other websites maybe i can load a flash drive on my usb?

    Thank you for reading this and again sorry for all my mistakes in my writing.
      My ComputerSystem Spec

  2.    31 Mar 2016 #2

    Sounds like you either managed to wipe the drive boot partition when you turned off the laptop mid scan OR you damaged your drive by doing so...Hopefully the former.

    You might want to try booting into a flash drive containing Windows 10 install media using the media creation tool to create a bootable USB flash drive or DVD disk..

    Windows 10


    1. Insert the installation DVD or USB and boot Windows 10 from it.
    2. In the ‘Windows setup’page, select thelanguage to install’, ‘Time and currency format’ and the ‘keyboard or input method’ and click on ‘next’.
    3. Click on ‘Repair your computer’ and select ‘Troubleshoot’.
    4. Click on ‘Advanced options’ and select ‘Automatic Repair’ and select the operating system.
      My ComputerSystem Spec

  3.    31 Mar 2016 #3

    Thank you again your quick answer.

    The thing is, as i said i don't have any cd installation i just have an usb key where i can maybe download what you mention.

    So where can i find this bios please?
      My ComputerSystem Spec


  4. Posts : 1,750
    Windows 10 x86 14383 Insider Pro and Core 10240
       31 Mar 2016 #4

    Bonjour, Grove, bienvenue à Tenforums.

    If you have a computer you can download with, follow this link ( I guess you will want the French version) :

    Windows 10

    and follow instructions for USB.






      My ComputersSystem Spec

  5.    31 Mar 2016 #5

    Hi there

    In addition - once you've installed Windows, download MACRIUM FREE and take an image (Backup) of your system.

    Cheers
    jimbo
      My ComputerSystem Spec

  6.    31 Mar 2016 #6

    OK so i went into a professionnal to repair it and since all the recovery system of windows 10 was broken (apparently since the second reboot) and since windows 8 (the original software from factury) was deleted he just installed a crack copy of windows 7 (from a cd) with a real and working key and then he upgraded it into windows 10.

    I paid 60 euros for it i hope it is fair.

    Thank you anyway for all your comments and i will use ur tip jimbo

    cheers
      My ComputerSystem Spec

  7.    31 Mar 2016 #7

    grove said: View Post
    he just installed a crack copy of windows 7 (from a cd) with a real and working key and then he upgraded it into windows 10.

    I paid 60 euros for it i hope it is fair.

    Thank you anyway for all your comments and i will use ur tip jimbo

    cheers
    I would make sure your Windows 10 license is valid now. From an elevated ("run as administor") command prompt - which you can get to by right clicking on the start icon, run:

    slmgr /dlv

    Post the result Window back here and we can tell you if you are now legit or not. There is nothing uniquely identifying in the results so you don't have to blank anything out.

    What you want to see in the results is RETAIL channel activation. If you see anything about MAK or KMS then your Windows 10 license is pirated and you're in for future problems.

    Since you had Windows 10 on the computer before, from an upgrade, there was no need for the "professional" to put a "crack copy of Windows 7" on the computer. It should have been just a clean install of Windows 10.
      My ComputerSystem Spec


  8. Posts : 1,750
    Windows 10 x86 14383 Insider Pro and Core 10240
       31 Mar 2016 #8

    Superfly's Showkey may show the key from the Windows 7 that was used too.

    There may be the Windows 8 OEM key in the UEFI Boot too.

    If that was a core edition, then the upgrade to Windows 10 would have been Home, and it thus had a Digital Entitlement. The "professional" did exactly twice as much work as he need have done - Just needed to install Windows 10, of the correct edition.

    However the "Crack" 7 was unlikely to be anything but Ultimate, (why bother to crack anything less?) so the version of 10 now is likely to be Pro. It's easy enough ( for "Professionals" and anyone else) to get non-kms windows 7 cracks, indistinguishable from OEM channel versions except by the date of installation, which is one of the features Microsoft uses to discover illegally activated systems.

    All Windows10 upgrades downloaded from Microsoft or MCT appear to be retail channel don't they?
      My ComputersSystem Spec

  9.    31 Mar 2016 #9

    Fafhrd said: View Post
    All Windows10 upgrades downloaded from Microsoft or MCT appear to be retail channel don't they?
    If the upgrade was performed from a legitimately activated Windows 7/8/8.1. I've seen Windows 10 upgrades show KMS activation when not legitimate.
      My ComputerSystem Spec


  10. Posts : 1,750
    Windows 10 x86 14383 Insider Pro and Core 10240
       31 Mar 2016 #10

    That would be reflected by the MAK or KMS product key apparent in Showkey or Slmgr /dlv not being one of the retail generic keys that have been active since Build 10240.

    But I think you can use a KMS key without needing to perform an upgrade, just install Windows 10 with a KMS key in the pid.txt, and connect to a KMSserver and activate for 180 days - that's the way it works isn't it?

    However Windows 7 illegitimately activated with a certain loader using an OEM 7 key would still lead to a retail generic upgrade Windows 10 Key displaying.

    You can't tell legit or not.
      My ComputersSystem Spec


 
Page 1 of 2 12 LastLast

Related Threads
Operating system not found in General Support
I have Sony Vaio I7, 8Gb memory. I do not have OS backup disk. I upgraded from 8 to 8.1 and then to 10. It has been running great. No problems. Use Kaspersky Internet Security. I shut down computer normally this morning. I powered back on this...
Operating System Not Found in General Support
Hi, my Acer Aspire One was upgraded to Windows 10. Eventually, I ran into some issues with the start menu not popping up, so I decided to run a clean reset of Windows 10. The reset failed, so I turned off the notebook. When I turned it back on, the...
I did the conversion from Windows 7 to Windows 10 about 1.5 months ago. This is a Dell Vostro w/Intel Corei5 desktop All was fine until I attempted to wake the computer from sleep mode recently and got the following error. An operating system...
Ok, so a while back when the Windows 10 Upgrade had popped up on my computer, I upgraded with no problem at all. I wanted to do a factory restore in order to clean up my laptop completely, however while updating, the power went out and the computer...
I have a Dell e6510 that was running Windows 7 Pro. I received the windows 10 upgrade after reserving a copy a few weeks back. Before the updated I made sure my windows update was up to date. I kicked off the upgrade to Windows 10 and left...

Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 14:02.
Find Us