In this tutorial we will install a Windows Vista, people format windows vista in try to fix their system, repair some functionality or upgrade from windows XP. If you are not sure about your system hardware compatibility with window vista check it here 
windows vista compatibility. Also make sure that you have the Drivers CD (that came when you’ve purchased  your PC), or if you don’t have them, download the latest Vista drivers  for your hardware (you can find them at the support section of your  hardware manufacturer, remember to save them to different partition than  “C:” (don’t save them in MyDocuments folder, it will get deleted with  the formatting), safest way is to store them in other partition than C:  (ex. D: , E: , removable drive like USB or burn them on a CD/DVD...       
            If you are sure that your PC is compatible with Vista, and you have all the  drivers saved, you can proceed with Formatting Windows Vista. ok let's start.....
1. Insert your Windows Vista DVD. The DVD is bootable so after  you restart your PC with the DVD inside the Windows Vista Setup will  begin loading. "if the setup doesn’t start automatically, make another  restart and press F2, or F8 after the boot screen and select boot from  DVD ". 
 2. The first screen of the Format Windows Vista sequence will  show up. At this point you need to select your Language and Time and  currency format "click the image to enlarge". Press "Next".
3. Press Install Now.... 
4.After a minute you will be asked for your Product Key.
         option 1:
If you don’t have your product key, you can skip this  step and at the next step you will be asked to pick Vista Package that  you want to install. "Vista Home Basic", "Home Premium, Business",  "Ultimate". If you install windows vista without providing product key,  after 14 days you will have to enter a valid product key, or if you  don’t, you’ll be forced to  format windows vista again. "Take note" This is good if  you want to test which windows vista version is best for you, before  your purchase.
         option 2:
You enter your product key, and at the next screen your purchased version will be auto-recognized. 
5.  Accept the Microsoft Windows User License Terms and press "Next" 
6. A message appears – “Which type of installation do you want ?”
        option 1: If you already have another operating system installed (ex. Windows XP)  you will have the Upgrade option enabled. It’s up to you to decide if  you prefer “clean” install or upgrading from previous Windows  Installation. Clean install is recommended for improving system  performance, and Upgrade Setup is recommended if you have some files in  your C: , My Documents, or Desktop folders that you don’t want deleted.
        option2:  You already have operating system installed but you want to format your  drive, deleting the old system and installing fresh Windows Vista copy.  In that case select the C: drive and press Format ( don’t format all  drives! only the primary where we are installing Windows Vista – ” 
C: “. The setup will do the rest. 
7.  Select Disk 0 and click "Next" 
8. The copy process will begin. This process can take some  time, so wait a bit, make a coffee and get some magazines to read.
 9. After Windows Vista Setup finishes, the computer will reboot.
10. Windows Vista files are copied , and now setup will  configure Windows Vista for your PC. This step will take some really  good time.
11. Installing Windows Vista finishes, insert your User Name and Password here.
12. Give your PC a name! and select one of the colorful backgrounds
. Select your preferred security settings. If this computer is not behind a  firewall, the best option is the ” Use Recommended settings”. If you  are using firewall then you can select “Install important updates only”  (Windows Update). If you want to be protected and your Windows Vista to  have the latest updates from Microsoft , select the first option.
13.Select your time zone and location, Network Configuration – Select your computer location. This settings sets your network permissions.
14. 
Welcome to your new Windows Vista Operating System, After you press Start, some Windows Vista settings will be upgraded automatically.
15. You now need to install some drivers that the system will not install automatically.
              It's finished!!!!! you now install windows vista to your computer!!!!