1.    26 Aug 2016 #1
    Join Date : Aug 2016
    Posts : 1
    Windows 10 64-bit Home "N"

    How do I restore system after it breaks

    Hi, I'm done with this problem. I've been over it so many times and nothing ever works.

    I'm on Windows 10 64-bit Home
    I have 2 drives in my PC. One is 60GB SSD, other one is 500GB HDD.

    The SSD has only `C:/` on it, with Windows (System partition).
    The HDD has `D:/` and `E:/` on it, which is "GAMES" and "PROGRAMS".

    Yesterday I got a BSOD about memory_management and after rebooting I get a "cng.sys is corrupted" error before boot.

    Correct order:
    C: Windows
    D: Games
    E: Programs

    Wrong (current) order:
    C: Games
    E: Programs
    D: Windows

    I plugged in my Windows 10 bootable USB and tried "repair pc during boot", but it couldn't fix it.
    I tried "sfc /SCANNOW /OFFBOOTDIR=d:\ /OFFWINDIR=d:" and it found no errors.
    I entered `diskpart` and changed C: Games to G: Games, D: Windows to C: Windows. Rebooted.
    The same error again: "cng.sys corrupted or not found". Okay.
    At least it's in correct order now. C: is Windows.
    I run repair during boot again, nothing.
    I run sfc /SCANNOW, nothing. Verification 100% complete. Windows Resource Protection could not perform the requested operation.

    What do I do now? Can I just download or replace that `cng.sys` from somewhere?

    /edit: Bootrec /ScanOS: Total identified Windows installations: 0.
    Last edited by VixinG; 26 Aug 2016 at 11:36.
      My System SpecsSystem Spec

  2.    26 Aug 2016 #2
    Join Date : Apr 2015
    Posts : 8,854

    Hi VixinG and welcome to Tenforums.

    This is a first for me, but perhaps you could download Kyhi's custom boot media, navigate to that corrupt file and replace it with a good copy from a working system?
    Windows 10 Recovery Tools - Bootable Rescue Disk - Windows 10 Forums

    Then, if there are still boot issues, open Macrium Reflect (also in Kyhi's boot medai), and select the FixBoot option.

    That's about all I can suggest. Perhaps others will post with some ideas.

    EDIT: Have you run chkdsk on the OS drive?
      My System SpecsSystem Spec

  3.    27 Aug 2016 #3
    Join Date : Jun 2015
    Posts : 1,020
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    Can you boot to Windows Safe Mode? If so, run sfc /scannow from and admin command prompt.

    If you can't start Windows then the Macrium repair disc is worth a try.

    You could try a repair install - see Repair Install Windows 10 with an In-place Upgrade
      My System SpecsSystem Spec

  4.    27 Aug 2016 #4
    Join Date : Oct 2014
    Posts : 395
    Windows 10 Pro

    Have you tried the classic boot repair measures?

    Change to the UEFI volume into the boot folder. Depending on the way Windows was installed this path maybe one of the following.
    cd /d E:\Boot\
    cd /d E:\EFI\Microsoft\Boot\
    cd /d E:\ESD\Windows\EFI\Microsoft\Boot\
    Now we will need to enter three command lines to repair the BCD store. Again depending on the way Windows was installed these may not all be necessary, however
    command lines are are unnecessary will not affect the outcome.

    1. bootrec /fixboot
    2. bootrec /fixmbr
    3. bootrec /rebuildbcd

    If the above does not help, maybe you can boot into Windows using the Super Grub Disk? I'd give it a try...

    It's also possible that the whole EFI partition is corrupted. In this case you would need to create a new one.
      My System SpecsSystem Spec


Similar Threads
Thread Forum
Solved Drive Letters
When I plug a USB stick in any USB port the laptop allocates the next available letter to this drive - "E" - this applies to any USB stick I normally use. EXCEPT for one particular USB stcik which always shows up as "G" even though "E" and "F"...
Drivers and Hardware
Solved Cloning to SSD then swapping drive letters
I have a new computer. I want to clone the system to a new SSD. Can I change the drive letter of the SSD to C: after cloning? My new computer (an ASUS) currently has Windows 8.1. I intend to upgrade to Windows 10 before I do anything more. I will...
Installation and Setup
Solved Drive Letters Moved
I didn't know where else to post this. All of a sudden I lost some usb 2.0 & all 3.0 ports and my C: drive is now F:. I tried to remove my usb hubs so windows could re-detect them. No go. I deleted the partition on my ssd to reinstall and I still...
Drivers and Hardware
Need BAT file to change my drive letters
Iím dual booting Win 10 and Win 8 or Win 10. Wen I make changes, like booting to a different HD, my drive letters change. Is there a way to use a BAT file to change my drive letters? I may use my macro program to have the BAT file run every time...
Drivers and Hardware
Solved Restore system from Macrum Reflex (free) files on removable drive
Suppose I use Macrum Reflex and create an image on a removable hard drive of Windows 10 and all settings that are on my C hard drive. If the computer is in such a state that it will not boot up, How do I restore what I have on the removable hard...
Performance & Maintenance
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 08:13.
Find Us
Twitter Facebook Google+

Windows 10 Forums