You have a computer that runs Windows Vista Service Pack 2 (SP2).

You need to upgrade the computer to Windows 7.

What should you do?

A.
Start the computer from the Windows 7 installation media and select the Upgrade option.

B.
Start the computer from the Windows 7 installation media and select the Custom (advanced) option.

C.
From Windows Vista, run Setup.exe from the Windows 7 installation media and select the Upgrade option.

D.
From Windows Vista, run Setup.exe from the Windows 7 installation media and select the Custom option.

Explanation:
Upgrading Windows Vista to Windows 7 instructions
Access the Windows 7 installation source and double-click Setup.exe. When prompted by User Account Control, click Allow. This loads the Install Windows page. Click Install Now.

Other Notes
You can upgrade computers running Windows Vista to Windows 7. When you upgrade from Windows Vista to Windows 7, all documents, settings, applications, and user accounts that existed on the computer running Windows Vista are available when the upgrade is finished. The advantage to an upgrade is that it allows you to keep the current application configuration.

When you perform a migration, you need to reinstall the users applications on the new computer. As mentioned previously, this can be problematic in organizations that are not careful about keeping track of which specific set of applications are installed on each users computer.

Prior to attempting to perform the upgrade from Windows Vista to Windows 7, you should run the Windows 7 Upgrade Advisor. The Windows 7 Upgrade Advisor is an application that you can download from Microsofts Web site that will inform you if Windows 7 supports a computer running the current hardware and software configuration of Windows Vista. Prior to running the Windows 7 Upgrade Advisor, you should ensure that all hardware that you want to use with Windows 7, such as printers, scanners, and cameras, are connected to the computer. The Upgrade Advisor generates a report that informs you of which applications and devices are known to have problems with Windows 7. A similar compatability report is generated during the upgrade process, but the version created by the Windows 7 Upgrade Advisor is more likely to be up to date.