Upgrade your Windows

Custom: Clean install so back-up your filesCustom: Clean install, so back up your files Upgrade: Doesn't affect your files during installationUpgrade: Doesn't affect your files during installation
You have, but want: Windows 7 Home PremiumWindows 7 Home
Premium
Windows 7 ProfessionalWindows 7
Professional
Windows 7 UltimateWindows 7
Ultimate
Windows XP,
all editions
CustomCustom CustomCustom CustomCustom
Windows Vista
Home Basic
UpgradeUpgrade CustomCustom UpgradeUpgrade
Windows Vista
Home Premium
UpgradeUpgrade CustomCustom UpgradeUpgrade
Windows Vista
Business
CustomCustom UpgradeUpgrade UpgradeUpgrade
Windows Vista
Ultimate
CustomCustom CustomCustom UpgradeUpgrade

What kind of installation will you need to do?

There are two ways to install Windows 7 on a PC: a custom (or clean) installation or an upgrade installation. The table above shows the type of installation you'll need to do based on the version of Windows you have and the one you want to install. Here's the difference between the two methods:

A custom installation erases everything on your hard drive. So you need to back up all your files, photos, music and settings on an external hard drive or on CDs or DVDs and then transfer them back to your PC after you install Windows 7. You'll also need to reinstall all your programs from their original installation disks. If you have Windows XP, you need to do a custom installation. Don't worry, we've got a great selection of devices that will help back up your files.

With an upgrade installation, Windows 7 will simply replace Windows Vista without affecting anything else on your PC. You can do an upgrade installation from many editions of Windows Vista to whichever edition of Windows 7 you want to install.

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