/silent
 Turns on silent mode

/restart
 Restart the OS after install (used with /silent)

/norestart
 Prevents system restart after successful installation

/bios
 Install just the certificate and serial

/k=XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
 Set the Windows 7/2008/Vista key

/c=
 Set the certificate (use the name of a certificate from the certificates folder or from the SLIC list)

/s=
 Set the SLIC (Acer, Advent, Alienware, Asus, BenQ, Dell, Founder, FSC, Fujitsu, HP, Lenovo, LG, Medion, MSI, Nokia, Quanmax, Samsung, Sony, Toshiba, Trigem)

/l=
 Set the loader (Default, Alternative, Older, Forceful, Custom)

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* If you don't set the loader it will default to the normal option
* If you don't set the certificate it will default to your BIOS's model
* If you don't set the SLIC it will default to your BIOS's model
* If you don't set the key it will default to your BIOS's model and the correct one for the OS (Ultimate, Professional, Starter or Home Premium)
* You can use these arguments via SetupComplete.cmd to pre-activate Windows 7/Vista/Server 2008
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Example:
"D:\Windows 7 Loader.exe" /silent /restart /k=342DG-6YJR8-X92GV-V7DCV-P4K27 /c=Acer /s=Acer /l=Default


SetupComplete.cmd Example:
@ECHO OFF
start /wait %systemroot%\setup\scripts\Windows7Loader.exe /silent /l=Default
SHUTDOWN /R /T 10