Windows XP Live USB edition

This is what you need :

-USB stick with 256 MB capacity.  512 MB Recommended. 
-A system that supports booting from Usb stick. 


Installation : 

1. Rename USB stick through file HPUSBFW.exe and format with FAT file system. 
2. Copy all the files from a folder on USB stick.
 

Start : 

1. Reboot the computer. 
2. In BIOS or through Quick-boot menu choose boot from the USB. 

Good luck!