Shoutbox

You can format your laptop by putting your windows cd into it (or perhaps a recovery cd that may have come with it to restore it to factory settings)

then enter the bios (during the pre start-up routing there will be an "F" button to press to get into 'bios' or 'setup', sometimes F2) and make sure that it is set to "Boot from CD" and then when it restarts you can press a button to make it boot from the cd and this will launch the facilities on the cd to format your laptop and reinstall windows