Windows bootup problems and solutions

NTOSKRNL Missing or Corrupt

If you get an error that NTOSKRNL not found:

1. Insert and boot from your WindowsXP CD.
2. At the first R=Repair option, press the R key
3. Press the number that corresponds to the correct location for the installation of Windows you want to repair.
   Typically this will be #1
4. Change to the drive that has the CD ROM.
5. CD i386
6. expand ntkrnlmp.ex_ C:\Windows\System32\ntoskrnl.exe
7. If WindowsXP is installed in a different location, just make the necessary change to C:\Windows
8. Take out the CD ROM and type exit

HAL.DLL Missing or Corrupt

If you get an error regarding a missing or corrupt hal.dll file, it might simply be the BOOT.INI file on the root of the C: drive that is misconfigured

1. Insert and boot from your WindowsXP CD.
2. At the first R=Repair option, press the R key
3. Press the number that corresponds to the correct location for the installation of Windows you want to repair.
   Typically this will be #1
4. Type bootcfg /list to show the current entries in the BOOT.INI file
5. Type bootcfg /rebuild to repair it
6. Take out the CD ROM and type exit

Corrupted or Missing \WINDOWS\SYSTEM32\CONFIG

If you get the error:
Windows could not start because the following files is missing or corrupt
\WINDOWS\SYSTEM32\CONFIG\SYSTEM or \WINDOWS\SYSTEM32\CONFIG\SOFTWARE

1. Insert and boot from your WindowsXP CD.
2. At the first R=Repair option, press the R key
3. Press the number that corresponds to the correct location for the installation of Windows you want to repair.
   Typically this will be #1
4. Enter in the administrator password when requested
5. cd \windows\system32\config
6. Depending on which section was corrupted:
   ren software software.bad or ren system system.bad
7. Depending on which section was corrupted
   copy \windows\repair\system
   copy \windows\repair\software
8. Take out the CD ROM and type exit

NTLDR or NTDETECT.COM Not Found

If you get an error that NTLDR is not found during bootup,

If you have FAT32 partitions, it is much simpler than with NTFS.
Just boot with a Win98 floppy and copy the NTLDR or NTDETECT.COM files
from the i386 directory to the root of the C:\ drive.

For NTFS:

1. Insert and boot from your WindowsXP CD.
2. At the first R=Repair option, press the R key
3. Press the number that corresponds to the correct location for the installation of Windows you want to repair.
   Typically this will be #1
4. Enter in the administrator password when requested
5. Enter in the following commands (X: is replaced by the actual drive letter that is assigned to the CD ROM drive.
   COPY X:\i386\NTLDR C\:
   COPY X:\i386\NTDETECT.COM C:\
6. Take out the CD ROM and type exit