|Go into your BIOS System Configuration Menu and set the Boot Options as follows:|
CD-ROM boot—Enable/disable boot from CD-ROM - Set this to enable
Boot Order—Set the boot order for:
ATAPI CD/DVD ROM Drive followed by Hard drive or by USB Hard drive (if your hard drive is still not working).
Save and exit to reboot.
Hopefully your system will now boot of the CD and then you can do what you were trying to do.
☺ When everything else fails, read the instructions.