Installing Windows XP on a Vista machine
Now, would you call that a DOWNGRADE? Popular opinion says no, as it seems a majority of computer users prefer the XP platform to Microsoft's latest version of Windows, Vista. The reason is that to date XP has been the most stable of all the Windows OS releases, having the greatest amount of compatibility with a wide variety of software. And it also afforded you a modicum of control over the settings and operation of your computer, unlike Vista that hides everything behind it's "user-friendly interface" and flashy buttons.
So it's no wonder that a lot of people who have purchased new computers and been "force-fed" Vista as their operating system are choosing to switch back to the familiar and relatively easy to use Windows XP.
Depending on your particular model of computer, and in particular laptop, this may not quite be as simple an operation as you may think. Getting anything running on a computer is always a complex marriage between hardware and software and various settings in the BIOS, and this case is no exception.