@BTS: I now testing M2 and have some questions... Did final steps in presetup.cmd after exit Setup.exe really work? REM +=======================================================+ REM | Reset DriverPolicy | REM |-------------------------------------------------------| reg add "HKCU\Software\Microsoft\Driver Signing" /v Policy /t REG_DWORD /d 1 /f reg add "HKCU\Software\Policies\Microsoft\Windows NT\Driver Signing" /v BehaviorOnFailedVerify /t REG_DWORD /d 1 /f reg add "HKLM\Software\Microsoft\Driver Signing" /v Policy /t REG_BINARY /d 01 /f REM +=======================================================+ REM +=======================================================+ REM | Cleanup | RD /Q /S %SystemDrive%\Drivers REM | Reset DevicePath | %CDDRIVE%\OEM\bin\SetDevicePath.exe %SystemRoot%\Inf REM +=======================================================+ There is good reason to believe, that modifications not saved to registry... Because immediately before exit, Setup process copy all selected hives data, and shedule these files to rename on next reboot (I analise filemon logs) ...and registry is shadow of it former itself.