How to Reinstall Ntoskrnl.exe

Ntoskrnl.exe is just one of many oddly named system files necessary for your Windows operating system to operate properly. Because it is a system file, it is also often a target for viruses and malware that wish to damage your computer. Occasionally, ntoskrnl.exe will become damaged or corrupted--either thanks to the viruses or because of a simple computer mishap--and will need to be replaced. All you will need to reinstall ntoskrnl.exe is your Windows setup disc.

• 1

  Insert your Windows install disc into your computer's CD drive.

• 2

  Restart your computer, then press a key when prompted to boot to the Windows setup disc.

• 3

  Press the "R" button to launch the Recovery Console program.

• 4

  Select your Windows operating system in the next screen, then type in your administrator password--if applicable--and press "Enter."

• 5

  Type the following phrase into the Repair Console command prompt:

  expand X:\i386\ntoskrnl.ex_ Y:\windows\system32

  Replace "X" and "Y" with your CD drive letter and the drive letter of the drive where Windows is installed, respectively. Press "Enter" to reinstall the ntoskrnl.exe file.

• 6

  Press "Y" followed by "Enter" to confirm your choice, then type "Exit" and press "Enter" once the process has been completed.