Thanks mate, but error is Architecture itself, this screenshot would help you understand better, just see the screenshot closely, II image is of x86 but OS selection window is showing "x64" also see the mount folder where I have mounted the 2nd image, there is no "Programe files (x86)" means it is a x86 OS. Secondly W7T, imagex and gimagex can only edit the Name, Description, Display Name and Display Description only, but can change the "Architecture" I have also open the wim with 7zip and I have found that <ARCH>9</ARCH> is there in index 2 and <ARCH>0</ARCH> in index 4, and it should be <ARCH>0</ARCH> in index 2 and <ARCH>9</ARCH> in index 4, and the worst part we can't edit the xml in 7zip. Can you please tell me where is this [1].xml which we see in 7zip or wim info xml so that I can edit it and solve my problem? I have also attached xml info and [1].xml which I have taken out from the install.wim by opening it with 7zip. 1.xml wim info.txt