I have loptop asus window vista and i would like to copy dvd movie but could not copy

To copy DVD on your computer, you need a DVD copier software. Here Leawo DVD Copy will be recommended. Leawo DVD Copy is a powerful DVD backup tool for people to back up their DVD contents with ease. It's capable of backing up DVD disc, folder and ISO image files. It can remove DVD disc protection thus allowing you to back up whatever disc you like freely. You can use it to back up your DVD disc to either your hard drive or a blank disc or directly copy ISO image file to a blank DVD disc.

You can click on this "Copy DVD Movie to Blank DVD Disc" which introduces several solutions for copying DVD movies for different needs. You can try Leawo DVD Copy which can decrypt the DVD protection and it can 1:1 DVD copy so that you can preserve the original DVD quality in the copy.

DVD movies are usually copy protected and cannot be copied without a DVD copy program that removes the copy protection.
You also need a DVD burning drive installed in your ASUS.
DVDFab is one of the best DVD burning programs available, I use and recommend it.
Go this this WEB site to download, it is available for a try before you buy basis.
http://www.dvdfab.com/