You can't install Windows Vista without a product key. (If you're reinstalling a version of Vista that came pre-installed on your PC, look for the product key printed on a sticker Vista gives you options: Home, Work, or a Public Location. Windows 10 requirements are:Processor: 1GHz CPU or faster RAM: 1GB (32-bit) or 2GB (64-bit) Disk space: 16GB (32-bit) or 20GB (64-bit) Graphics: DirectX 9-capable video card with WDDM driverScrap your old More» Make Vista Great, Part 3: Improve Performance and Stability Vista is not known for its swiftness or stability, nor should it be. this contact form
And Windows Explorer crashes far more often in Vista (preceded, of course, by the notorious Green Ribbon of Death). Right-click on the cd-rom drive in the list and choose Change Drive Letter and Paths from the menu. The product key usually lives on a little sticker affixed to the CD's packaging. And if you use a wireless network with WPA2 security (or if you're not sure), also download the Wireless Client Update and save it to the backup disk. http://www.howtogeek.com/howto/windows-vista/install-windows-xp-on-your-pre-installed-windows-vista-computer/
If this option's grayed out, one of the following could be a problem: You're trying to upgrade an incompatible version of Windows XP. The status bar displays the percentage complete. Please try again later. Whatever you do, don't try and install onto your Vista partition!