Windows 10: I did a PC reset with Windows 10, it failed & now I have no OS at all

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  1.    13 Aug 2015 #1

    I did a PC reset with Windows 10, it failed & now I have no OS at all


    So I upgraded to Windows 10 last week, & after a few days decided I wanted to do the reset feature to have a nice clean install. I was also getting an annoying pop-up error that looked like some sort of malware, but virus & malware scans weren't getting rid of it.

    Ok, so I do the reset, & opted for full clean not the quick one, just to make sure I got everything off there. It took quite a long time ( about 15-20 minutes per 1% progress), so I left it & came back later. When I got back I had an error message that said "There was a problem resetting your PC." with my only option being to click cancel. So I did. after that it brought me back to a reset screen, where I attempted to do the quick reset a few times, & it failed after a few percent each time.

    At this point I decided to shut down & try again. When I booted back up I was greeted with the lovely message of "An operating system wasn't found. Try disconnecting any drives that don't contain an operating system. Press Crtl+Alt+Del to restart"...so my pc was wiped but the reinstall part failed somehow it seems, leaving me with nothing.

    I created a bootable usb for Win10 from the Microsoft website, following their instructions to the letter. Installation seems to go fine ( Copying Windows files, Getting files ready for Installation etc). That screen finishes up & I get a Restarting in 10 Seconds screen. I let it restart & then I get stuck at a black screen with a blinking cursor in the top left corner.

    I have done some reading on this & tried everything I found, nothing has worked. I've let it sit, tried hitting Crtl to type password then hit Enter, I've unplugged my second monitor & any non essential USB devices, everything. I've tried installing multiple times, to the same result.

    Also worth noting that I was unable to revert back to Win7. When I put my 7disc in I get a message saying "A required CD/DVD drive device driver is missing. If you have a driver floppy disk CD,DVD or USB flash drive, please insert it now. "
    I've used this disc many times with no issue, & now I can't even reinstall 7?

    If anyone can help, it would be hugely appreciated.
      My ComputerSystem Spec

  2.    13 Aug 2015 #2

    Go into BIOS and set it to Legacy boot mode, not UEFI.
      My ComputerSystem Spec

  3.    13 Aug 2015 #3

    NavyLCDR said: View Post
    Go into BIOS and set it to Legacy boot mode, not UEFI.
    Thanks for the reply, I will try that & report back.

    Edit - I have an Asus Crosshair Formula V motherboard. I could not find an option to use Legacy boot over the UEFI
    Last edited by Aquapod; 13 Aug 2015 at 16:41.
      My ComputerSystem Spec


  4. Posts : 5,007
    Windows 10 Pro X64 15063.138
       13 Aug 2015 #4

    If you need to get a Windows 8.1 ISO to reinstall with, see here: Windows 8 and Windows 8.1 ISO - Download or Create

    The updated Option One shows you how to use a Microsoft provided tool (mediacreationtool.exe) to download any version of 8.1 for either 32 or 64 bit, regardless of what computer (bit wise) you are running from.

    Mediacreationtool must be run from a Windows 7, 8 or 8.1 computer.
      My ComputersSystem Spec

  5.    13 Aug 2015 #5

    Aquapod,

    You have access to a working computer? Either create another Windows 10 USB using the Media Creation Tool - or you can use the one you have already made, but it will get almost erased. Put the USB stick with the Windows 10 in the working computer (do not boot from it - put it in while the computer is running). Do not run anything from it. Then put in your Windows 7 DVD. Again do not run anything from it. Select all the files and folders on the DVD and copy them to the Windows 10 USB. Overwrite all files it says are duplicates. This just might make you a bootable USB that you can install Windows 7 from.
      My ComputerSystem Spec

  6.    13 Aug 2015 #6

    I have the same problem, I repeated the exact steps OP did. I have a laptop and windows 7 was pre-installed, so I don't have a windows 7 CD. I've tried the suggestions in the thread except using a windows 7 CD, but I'm still stuck. What's the easiest way I can get back my OS? (Not very computer savvy)
      My ComputerSystem Spec


  7. Posts : 5,007
    Windows 10 Pro X64 15063.138
       13 Aug 2015 #7

    What version and bitness (32/64) of Windows 7 did you have?

    Basic
    Home Premium
    Pro
    Ultimate?
      My ComputersSystem Spec

  8.    13 Aug 2015 #8

    Windows 7 Home Premium x64
      My ComputerSystem Spec


  9. Posts : 5,007
    Windows 10 Pro X64 15063.138
       13 Aug 2015 #9

    Check you messages.
      My ComputersSystem Spec

  10.    14 Aug 2015 #10

    Ztruker said: View Post
    If you need to get a Windows 8.1 ISO to reinstall with, see here: Windows 8 and Windows 8.1 ISO - Download or Create

    The updated Option One shows you how to use a Microsoft provided tool (mediacreationtool.exe) to download any version of 8.1 for either 32 or 64 bit, regardless of what computer (bit wise) you are running from.

    Mediacreationtool must be run from a Windows 7, 8 or 8.1 computer.
    Thanks for the reply Ztruker. Question, how would I be able to use a Windows 8 iso if I didn't have 8 before? I went from 7 to 10? Also to answer your other post, it was Win7 Ultimate.
      My ComputerSystem Spec


 
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