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Error: windows root>\system32\ntoskrnl.exe - Computers & Internet

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  • jdsmile Oct 20, 2008

    I brought this rebuilt computer from a friend. I did not come w/ any boot disk and I did not make a back up copy.So I am having a hard time with your instructions.

  • Anonymous Jan 07, 2009

    i have window xp my windows root system32 ntoskrnl.exe filenis missing. i cannot start my computer.

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Issue: NTOSKRNL.EXE is missing or corrupt.
Related errors:
Below is a listing of the full error message that may be related to this error.
Windows NT could not start because the below file is missing or corrupt:
C:\Winnt\System32\Ntoskrnl.exe
Cause:

  1. Keyboard issue
  2. Miscellaneous corruption
  3. Corrupt boot.ini file.
  4. Missing boot.ini file.
  5. Missing or corrupt ntoskrnl.exe file.
  6. Windows NT installed on a partition bigger then 7.8GB
  7. Corrupted hard disk drive or severely corrupted Windows.
Solution: Keyboard issue This issue has also been known to be caused by a short in the ground wire in the keyboard cable. Make sure this is not the cause of your error by replacing the keyboard with a different keyboard or simply just disconnecting the keyboard from the computer.
Miscellaneous corruption Before trying any of the below recommendations it's recommend that you attempt to load the last known good configuration. Additional information about doing this can be found on document CH000626.
Corrupt boot.ini file This issue is often caused when the boot.ini is missing or improperly configured. This issue often arises after a user has recently added or removed an operating system on the computer or added or removed hard disk drives in the computer. Make sure the line pointing to the operating system and it's drive and partition is properly configured in the [boot loader] and [operating systems] section. Additional information about boot.ini can be found on document CH000492.
Missing boot.ini file Microsoft Windows XP users: If the boot.ini is severely corrupted or missing a user running Microsoft Windows XP can rebuild the boot.ini to resolve this issue. Additional information about rebuilding the boot.ini can be found on document CH000648. Microsoft Windows NT and Windows 2000 users: To restore the original boot.ini file in Microsoft Windows NT or Windows 2000 you will need an ERD and follow the below steps. If you do not have an ERD you will be unable to follow these steps.
  1. Boot the computer with your Windows NT three setup diskettes or the Windows 2000 setup disc.
  2. In the setup menu, type R to start the repair.
  3. When prompted for the ERD diskette insert the diskette and inspect the startup environment.
Missing or corrupt ntoskrnl.exe file If the ntoskrnl.exe file is corrupt or missing this can also generate the error. To restore this file follow the below steps.
  1. Insert the Microsoft Windows XP CD. Note: If you have a recovery CD or a restore CD and not a Microsoft Windows XP CD it is likely the below steps will not resolve your issue.
  2. Reboot the computer, as the computer is starting you should see a message to press any key to boot from the CD. When you see this message press any key.
  3. In the Microsoft Windows XP setup menu press the R key to enter the recovery console.
  4. Select the operating system you wish to fix, and then enter the administrator password.
  5. Type expand d:\i386\ntoskrnl.ex_ c:\windows\system32
  6. You will then be prompted if you wish to overwrite the file type Y and press enter to overwrite the file.
  7. Type exit to reboot the computer.
Windows NT installed on a partition bigger then 7.8GB If you are running Microsoft windows NT 4.0 on a partition larger than 7.8GB this issue can occur if the boot files are located outside this limitation. When this error occurs your computer will have the error message as shown below. OS Loader v4.01
Disk I/O error status=00000001
Windows NT could not start because the below file is missing or corrupt: winnt\system32\Ntoskrnl.exe
Please reinstall a copy of the above file. If your system partition is larger than 7.8GB you will need to delete the partition and recreate the partition to 7.8GB or less. Additional information about this issue can be found on Microsoft KB Q224526.
Corrupted hard disk drive or severely corrupted Windows Attempt to check the hard disk drive for any errors by running the chkdsk error. To do this follow the below steps.
  1. Insert the Microsoft Windows XP CD. Note: If you have a recovery CD or a restore CD and not a Microsoft Windows XP CD it is likely the below steps will not resolve your issue.
  2. Reboot the computer, as the computer is starting you should see a message to press any key to boot from the CD. When you see this message press any key.
  3. In the Microsoft Windows XP setup menu press the R key to enter the recovery console.
  4. Select the operating system you wish to fix, and then enter the administrator password.
  5. Once at the recovery console type chkdsk /r
  6. Once completed type exit and see if issue is resolved.
If after trying all of the above steps you are still encountering the same issue it's likely that Windows is severely corrupted and it is recommended you attempt to reinstall Windows. Additional information about erasing the computer and starting over can be found on document CH000186. Finally, if during the Windows installation you encounter errors it's likely that your hard disk drive is bad.

Posted on Oct 18, 2008

  • vic donald somera
    vic donald somera Oct 20, 2008

    sorry for that, thats all i can think of in posting "error: windows root>\system32\ntoskrnl.exe"

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1 Answer

How can i reinstall the ntoskrnl.exe when it is corrupt


Assuming a couple of things:
1. Your OS is Windows XP
2. This is the error message you are getting -
"Windows NT could not start because the following file is missing or corrupt:
Winnt_root\System32\Ntoskrnl.exe
Please re-install a copy of the above file."

To reinstall notskrnl.exe, do this:
  • Start the computer by using your Windows XP CD-ROM. Press any key to boot from the CD.
  • After the setup files are finished loading press R to repair using Recovery Console.
  • When you are in the recovery console, select the installation to log on to (usually number 1), and then press ENTER.
  • Login to the Administrator account by typing the password for this account, and then press ENTER.
  • At the recovery console command prompt, type the following command, and then press ENTER:

    For Uni-Processor systems: expand <cd-drive>:\i386\ntoskrnl.ex_ <hd-drive>:\Windows\system32\ntoskrnl.exe
    For Multi-Processor systems:expand <cd-drive>:\i386\ntkrnlmp.ex_ <hd-drive>:\Windows\system32\ntoskrnl.exe
    Note In these two commands, the <cd-drive> placeholder represents the drive letter of your CD drive, and the <hd-drive> placeholder represents the drive letter of the hard disk on which windows is installed.
  • If you receive a prompt to overwrite the file, press Y.
  • Type exit, and press ENTER at the command prompt.
  • You should now be able to boot up properly.
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    You'll need a repair disc or operating system disc to repair it. If you had a operating system disc you could get the file from it.

    Using a regular Windows Operating System disc, you boot to the disc, then press the R for repair to enter the repair or recovery console.
    Select the operating system, then enter your admin password which is blank in most cases so just hit enter.
    Type: Expand d:\i386\ntoskrnl.ex_ C:\Windows\System32.
    You should get a prompt asking you if you want to Overwrite the File.
    You should enter Y for yes, the press <ENTER> to Overwrite.
    Type exit, remove the disc from the DvD/CD drive.
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    1. Insert the Windows XP startup disk in the floppy disk drive, or insert the Windows XP CD in the CD drive, and then restart the computer.
    2. Click to select any options that are required to start the computer from the CD drive if you are prompted to do this.
    3. When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
    4. If you have a dual-boot or multiple-boot computer, select the installation that you want to access from the Recovery Console.
    5. When you are prompted, type the Administrator password. If the Administrator password is blank, press ENTER.
    6. At the Recovery Console command prompt, type the following lines. Press ENTER after each line. cd system32
      ren ntkrnlpa.exe ntkrnlpa.old
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    Windows root system32 ntoskrnl.exe missing or corrupt can you reinstall it without cd?


    you can install id using a USB drive.

    make your USB drive bootable and then copy the files from any other computer .

    Google out on how to make the USB bootbale.

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    Windows root system32 ntoskrnl.exe.


    this might help you out...

    http://www.computerhope.com/issues/ch000646.htm

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    <windows root>\system32\ntoskrnl.exe.


    If the ntoskrnl.exe file is corrupt or missing this can also generate the error. To restore this file follow the below steps.

    1. Insert the Microsoft Windows XP CD. Note: If you have a recovery CD or a restore CD and not a Microsoft Windows XP CD it is likely the below steps will not resolve your issue.
    2. Reboot the computer, as the computer is starting you should see a message to press any key to boot from the CD. When you see this message press any key.
    3. In the Microsoft Windows XP setup menu press the R key to enter the recovery console.
    4. Select the operating system you wish to fix, and then enter the administrator password.
    5. Type expand d:\i386\ntoskrnl.ex_ c:\windows\system32
    6. You will then be prompted if you wish to overwrite the file type Y and press enter to overwrite the file.
    7. Type exit to reboot the computer.

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    Use the ERD disk and repair the installation. Choose to replace all files, and then replace only the Hal.dll and Ntoskrnl.exe files.

    If you can start another installation of Windows NT on the same computer, you can expand the correct Hal.dll and Ntoskrnl.exe files from the Windows NT CD-ROM. To do so, follow these steps:
    1. Boot to the working version of Windows NT.
    2. Start a command prompt.
    3. Change to the CD-ROM drive.
    4. Change to the appropriate folder on the CD-ROM (for example, I386 for Intel-based computers).
    5. Type expand hal.dl_ <systemroot>\system32 where <systemroot> is the path of the non-functioning Windows NT folder.
    6. Type expand ntoskrnl.ex_ <systemroot>\system32.
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    From: http://www.computerhope.com/issues/ch000646.htm If the ntoskrnl.exe file is corrupt or missing this can also generate the error. To restore this file follow the below steps. 1. Insert the Microsoft Windows XP CD. Note: If you have a recovery CD or a restore CD and not a Microsoft Windows XP CD it is likely the below steps will not resolve your issue. 2. Reboot the computer, as the computer is starting you should see a message to press any key to boot from the CD. When you see this message press any key. 3. In the Microsoft Windows XP setup menu press the R key to enter the recovery console. 4. Select the operating system you wish to fix, and then enter the administrator password. 5. Type expand d:\i386\ntoskrnl.ex_ c:\windows\system32 6. You will then be prompted if you wish to overwrite the file type Y and press enter to overwrite the file. 7. Type exit to reboot the computer. If you only have a restore CD, this probably won't work. You should just start the restore all over again, if this is the case.

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