Quickest way to reformat hd

[Clammie]

Hello,
i got a dell 4600 given to me i would like to reformat it and start over and give to my grandparents to use as a web serfer. Only thing i have windows pro disk but wont let me use it to reformat it

 

[PhilFrisbie]

Dell PCs normally come with a recovery partition that can be used to reinstall the operating system like new. I would try that first, and you will find the details on the Dell website.