How do I can format my PC with XP?

• Before formatting determines what characteristics of your PC (mark and model, mainboard, video, sound, network). Then you go to each of the manufacturers and downs the last driver for the operating system you are going to get.
  
• The operating system can detect all the settings sometimes not depending on whether original or neglected versions.
  
• If you can not detect the driver update downloaded in the first step.
  

If you go to reinstall windows then just when you lift the windows from the installation CD, choose the option to delete the partition on C, then think again. Care delete other partitions that may have more information.
Choose the installation path in C.
Everything is to not display the windows.old