• Corrupted boot sector.
• Corrupted master boot record (MBR).
• Virus infections.
• Missing or corrupt NTLDR or Ntdetect.com.
• Incorrect Ntbootdd.sys driver.

• Incorrect or corrupt device drivers that have been installed into the Windows System directory.
• Boot problems that occur after the OSLOADER screen.

• Create a copy of the first Windows Setup disk using the diskcopy command, and then delete all files on the new disk.
• Copy the Ntdetect.com and NTLDR files from the i386 folder on the CD-ROM to the new disk.
• Rename the NTLDR file to "Setupldr.bin".
• Create a Boot.ini file. The following example works for a single partition SCSI drive with Windows installed under \WINNT; however, the exact value in the [operating systems] section depends upon the configuration of the Windows System you want to boot:
  
  [boot loader]
  timeout=30
  Default= scsi(0)disk(0)rdisk(0)partition(1)\winnt
  
  [operating systems]
  scsi(0)disk(0)rdisk(0)partition(1)\winnt="Windows NT"
  
• If your computer boots from an IDE, EIDE, or ESDI hard drive or a SCSI adapter that does not have a built in BIOS, replace the scsi(0) with multi(0).
  
  If you are using scsi(x) in the Boot.ini file, copy the correct device driver for the SCSI controller in use on the computer, and then rename it to Ntbootdd.sys. If you are using multi(x) in the Boot.ini, you do not need to do this.
  
• Start your computer using the floppy disk, and then log on to Windows.

• Format a floppy disk using the Windows format utility.
• Copy NTLDR from the Windows Setup CD-ROM, Windows Setup floppy disk, or from a computer running the same version of Windows as the computer you want to access with the boot floppy. You may need to expand this file from NTLDR._ to NTLDR by using the following command line:

1. expand ntldr._ ntldr

• Copy the Ntdetect.com file to the disk.
• Create a Boot.ini file or copy one from a running Windows computer, and then modify it to match the computer you are trying to access. The following example works for a single partition SCSI drive with Windows installed under \WINNT; however, the exact value in the [operating systems] section depends upon the configuration of the Windows computer you are trying to access:
  
  [boot loader]
  timeout=30
  Default= scsi(0)disk(0)rdisk(0)partition(1)\winnt
  
  [operating systems]
  scsi(0)disk(0)rdisk(0)partition(1)\winnt="Windows NT"
  
• If your computer starts from an IDE, EIDE, or ESDI hard drive, replace the scsi(0) with multi(0).
• If you are using scsi(x) in the Boot.ini, copy the correct device driver for the SCSI controller in use on the computer, and then rename it to Ntbootdd.sys. If you are using multi(x) in the Boot.ini, you do not need to do this.
  
• Start using the floppy disk, and then log on to Windows.

Windows could not start because of the following ARC firmware boot configuration problem: Did not properly generate ARC name for HAL and system paths. Please check the Windows (TM) documentation about ARC configuration options and your hardware reference manuals for additional information. Boot Failed.