
The simplest way to create a data backup is to use windows.
This is a very limited way to backup your data but if all you need to backup is document files like word or excel then
this way is ideal.
First find the file you want to put onto your disk. For example is the file in my documents. if so then open my documents.
Next Right click the file you wish to backup.
Now from that menu highlight Send to
Then click on your cd drive or your dvd drive at the bottom of that menu.
As bellow

Next you will see a message bubble appear at the bottom right of your screen telling you that you have files waiting to be written to the CD
Click on this bubble and in the next window you will see all the files ready to be written to your CD.
Highlight the files you wish to backup onto the CD by clicking on them.
Then click on write these files to CD on the top left of the window.
The CD writting wizard will now start. Just follow this wizard to write backup your data to the CD.
Remember this is a very limited way to backup you data.
For a complete data backup you need the correct data backup software.