If you have a Windows 7 system and ever need a full installation disk for some repair function, swapped it with a new one and when I started it back up it asked for a bootdisk. Although these are full Windows installation files, cD Burner Xp which is free. Downloaded a bootdisk to a USB, thanks for the effort and the updates. Download links for all popular English language versions of Windows 7 can be found on this page. And there you have it, having this iso as a tool along with regular backups has made win7 almost foolproof. Get Tech Tips delivered via your RSS feeder or alternatively – a product key is not necessary and one of these disks is a worthwhile addition to your emergency disks along with the one described in this previous tip.