So, here is my winnt.sif file (I didn't copy this file to winnt32.sif !!) for this install, I didn't add regtweak nor svcpack file, only the unattended with this file. I have try with comment all the components to try without this section but it's the same !! (I try with Virtual PC) I have add 'OemPnPDriversPath' but with my last test, the directories were not present on my CD (prehaps it will create pb !!!) Thanks for your help ! Edit : I've had an image of setuperr.txt file (only the beginning, the rest is for unsigned files - from WMP10 I suppose...) --------------------- ;SetupMgrTag [Data] AutoPartition=0 MsDosInitiated="0" UnattendedInstall="Yes" AutomaticUpdates=yes [unattended] UnattendMode=FullUnattended OemSkipEula=Yes OemPreinstall= No TargetPath=\WINDOWS FileSystem=* UnattendSwitch="yes" OemPnPDriversPath="drivers\000_IntelInf;drivers\001_LAN;drivers\002_Graphics\ATI;drivers\002_Graphics\WDM;drivers\003_SoundMax;drivers\003_ScSI;drivers\005_Mouse" DriverSigningPolicy=Ignore WaitForReboot=No CrashDumpSetting=0 DUDisable=Yes Hibernation=No [GuiUnattended] AdminPassword=#### EncryptedAdminPassword=Yes OEMSkipRegional=1 TimeZone=105 OemSkipWelcome=1 [userData] ProductKey=#### FullName=### OrgName=### ComputerName=### [Display] BitsPerPel=32 Xresolution=1280 YResolution=1024 Vrefresh=85 [RegionalSettings] LanguageGroup=1 Language=0000040c [branding] BrandIEUsingUnattended=Yes Home_Page=http://www.google.fr Search_Page=http://www.google.fr [Proxy] Proxy_Enable=0 Use_Same_Proxy=1 [identification] JoinWorkgroup=#### [Networking] InstallDefaultComponents=Yes [GuiRunOnce] [Components] ;accessopt=off ;calc=off ;chat=off ;deskpaper=off ;fax=off ;freecell=off ;hearts=off ;media_clips=off ;media_utopia=off ;mousepoint=off ;minesweeper=off ;msnexplr=off ;paint=off ;pinball=off ;solitaire=off ;spider=off ;templates=off ;zonegames=off [WindowsFirewall] Profiles=WindowsFirewall.TurnOffFirewall [WindowsFirewall.TurnOffFirewall] Mode=0