I am in possession of a Packard Bell Computer With XP installed . Packard Bell put a lot of extra tools etc: which I do not want so I want to wipe the drive clean and then reinstall Windows XP .My worry is that it does not affect the Bios when I do a Format .
Am I being a worrier and is the Bios Safe Please ??

The BIOS has nothing to do with formatting a hard drive; just make sure that you have a Windows XP CD and all the necessary drivers for your system.
What is BIOS:
http://kb.iu.edu/data/ahtz.html

What Dino means is to be sure that you have the mainboard drivers for your mainboard, ordinarily called chipset drivers. These are very important. XP has many common mainboard drivers already loaded on the installation disk, but that is no guarantee that yours are there. In addition, make sure that if you have any add-on cards installed you have the drivers for those.

Many thanks to you both ,Never had to format before so wanted to make sure I knew what I was doing .God job I did as I never gave the Chipst/Mainboard drivers a thought .So it is off to find the necessary CD`s .
Again many thanks to you both

Glad that we were able to help; post back if you have any questions.