Now these days windows XP is too old to use. So, you have to switch into newer versions of windows such as 7, 8 or 8.1. But if you are a beginner then you face some problem to boot it into a DVD or pendrive (USBs). We will help you to do that properly with picture tutorial.
Note: You have to Download Windows 7, 8 or 8.1 - .iso file first from Internet.
How To Make Bootable Windows 7, 8, 8.1 DVD or USB:
1. First open - Windows 7 USB DVD Download Tool.
If you don't have that software then download it from - HERE: http://www.aim-techs.com/how-to-make-a-bootable-windows-pendrive.xhtml

2. Now click on - Browse and select .iso file of Windows 7, 8 or 8.1 any one of this and hit - Next.

3. Then select USB or DVD which device you want to boot. I select USB device.

4. Chose that drive if you have more that one drive attach and hit - Begin Copying.

5. Wait few minutes and then copying will be complete 100%.

6. Exit - Windows 7 USB DVD Download Tool and you have ready your Bootable Pendrive.