When the computer restarts during ASR, you receive a message similar to:
Windows could not start because the following file is missing or corrupt: %SystemRoot%\System32\Ntoskrnl.exe.
NTLDR is missing
Press any key to restart
The above problem occurs because your computer started from the hard disk, which had been altered by the ASR wizard, which created orphaned security descriptors. You should haved started from the Windows Server 2003 CD-ROM.
To resolve this problem:
1. Restart your computer.
2. When the text screen appears, press F2 to start the ASR wizard.
3. When the computer reboots, and you receive the Press any key to restart message, you must press a key, like space, to start from the CD-ROM.
NOTE: You may have to run chkdsk, in the Recovery Console, to clean the orphaned security descriptors.