re-formatting help

Long story short, re-formatted but never installed some files properly so when it goes to install off the disc its asking for the disc but not finding it.
Is there a way to force the setup for formatting again because i can't seem to get back to that setup it just goes straight to the setup for installing xp.
Plus im ragin, can't listen to any music cause the pins for the usb cable to the external hard drive are bent

Is there a way to force the setup for formatting again because i can't seem to get back to that setup it just goes straight to the setup for installing xp.
Plus im ragin, can't listen to any music cause the pins for the usb cable to the external hard drive are bent






