I am trying to reformat my desktop and have been following the instructions in the owners manual that came with it, i have inserted the operating system cd (windows XP) i then shut it down and restart i press F12 for the boot menu i select IDE CD rom device (option 5) then instead of booting from the drive it starts up normaly is there any other way to reformat my drive? All the advice i can find on the internet seems just to repeat the instructions in my manual Thanks Eric