How to get windows xp back on my system?

well I put windows vista on my computer and its to slow and I lost my windows xp disk. so how do I get windows xp back on my computer?

I'm not sure, but I'd run back to XP as fast as you can. Can you say, Incompatible?

To get back to Windows XP you'll need an XP disk - I don't think there's a built-in way to change it back once installed . The alternative might be to soup-up your computer a bit - more Ram can make a world of difference with Vista.

No, there's no way to go back to XP once you have Vista without a disk. When you install a new OS, you normally format the drive with the old OS on. As in, delete everything. The only way you can get XP back is by a) buying a new XP disk, or b) downloading XP and burning it to a bootable disk.

does your computer have a system recover function ???/

you can recover your computer by recover and it will reinstall your windows XP