

You can now delete the Windows.old folder as it is not necessary to be on your computer. You are now left with a fresh clean install of Vista and your original Vista install has been renamed C:\Windows.old. Once setup has completed for the second time you will be able to activate Windows Vista as normal.Yes, you are performing a second installation of Vista.

When asked whether to perform an Upgrade or a Custom (advanced) install, choose the Custom (advanced) option to perform a clean install of Vista.Go through the setup, but this time when it asks for your product key, enter in the product key that came with your upgrade.Once the setup has completed and you are back at your new Vista desktop, run the setup program from the Vista DVD again from within the new Vista 30-day trial.This is important, so do not pick a version that you did not purchase as it will affect later steps. So if you purchase Home Premium, select Home Premium. When prompted select the edition of Vista which you had purchased.This will install Vista as a 30-day trial. Instead click on the Next button and continue with the setup. When prompted to enter your product key, Do not enter it.When you get to the setup screen, start a new setup of Vista.

