Being able to reinstall Windows using a USB you just keep nearby can be a big help, and to do this all you need to do first is create a bootable Windows USB drive. When you first use your computer, you're prompted to create a DVD backup of your Windows install, but keeping a DVD safely and not losing it can be a bother. Ever faced a virus attack on your PC? Have an old laptop that refuses to boot up one fine day, throwing up errors such as bootmgr missing or NTLDR missing? Your best option in both these cases may be to reinstall Windows on your computer.
