First, you don't use fdisk to format a hard disk. And second, I think, the error message you quote as "no fdisk present" isn't the litteral text of the message.
So please tell more on what you do, and what happens.
BTW, did you have a look inside the machine to see if a it has a hard disk and if it is properly connected?
I,m trying to reformatt this computer I got and when I run fdisk I get an error: no fdisk present. New at this so any info would be greatly appreciated.....