reformatting a dell optiplex 755

[shottyshotya]

hi

my mother recently brought an old computer home from work she no longer needed, i have been trying to reformat it but it didnt come with a reinstallation cd, so i have been trying to reformat it with an old XP windows home edition from 2002, but the computer doesnt seem to read it when i reboot the computer. i have reformatted a computer before. It's really annoying if anyone had any hints or help would be muchly appreciated.

 

[Hefemeister]

have you change the boot order in bios to have the cd drive listed before the hard drive?