Hello Littlebr00k thanx for helping... First of all, even if %systemdrive%\Install\start.cmd command under [GuiRunOnce] is wrong the winnt.sif file should work properly but without installing any applications...So windows installation acts like no winnt.sif file exists... Second, i will change the UnattendSwitch="Yes" to UnattendSwitch=Yes but i dont think there is a problem with this cause i did what guides exactly mention.I will give it a try even though...Also the winnt.sif file has got no extra extensions checked for one more time...Generally i was very carefull in what i was doing and i got dissapointed by the result