Restore Dell Dimension C521 to factory settings
I want to restore my dell dimension c521 to factory settings but i don't know how to do it. I already research but i cant find the answer they always telling me to press F8 when rebooting the computer but its not working the only option is F12 for boot menu and F2 for setup and tried both of it but i cant find the " Repair computer ".
I don't have a CD of dell.
Please help me I highly appreciated.
Thank you








