Need activation key of vista(all)

On the other hand, if you are trying to get the key for the original Vista product installed on your laptop, and you have NOT formatted your hard disk, or reloaded the system from a retail CD/DVD of Vista:
1) Check on the bottom of the laptop for the "Microsoft" label. One was fixed to the bottom of the machine when it shipped from the factory, and the key for your version of Vista is located there on a label (look multi-colored Microsoft label with silver hologram). If the label has been removed, and again, you have not just wiped your hard disk and reloaded the OS, then:

2) Do a Google search for a program called "SIW". This program will look for, and in most cases find, any Microsoft / Windows keys installed on the system (along with giving you concise, accurate, and sometimes hard to find info about everything on your system, from MB serial #'s to drivers, you name it! excellent program to have handy)
The program can run independently from a USB drive, or, run from the .exe file directly on hard drive. You do not have to install it, just download and run the siw.exe file. The SIW program is FREE, although, if you use it, please make a donation.
(if you need the key, I am assuming you may have had to reload the OS, in which case, this info likely will not help you - posting this answer because you did not specify why you need the key)

I hope that this helps. If you upgraded your installation of Vista, or you have purchased retail CD/DVD, you will need to obtain your key from the original packaging, or contact Microsoft for assistance. You cannot use forums to obtain a key if you purchased or downloaded a copy of Vista in order to re-install your operating system; and although I sympathize, I encourage you to follow instructions of the previous two answers if this is the case.

You can't get a Windows Vista Key on forums like this you have to buy it directly from Microsoft getting a key in thru forums or even Ebay is Ilegal you can only get them at www.microsoft.com .