To go directly to one of the versions, select one of these links:. Windows 10 (Then select Download tool now.). Windows 11 (Then select Download tool now.). Important: Back up your files before you install or reinstall Windows on your PC. Learn how for Windows 10 and Windows 11 or for Windows 7 and Windows 8.1. To create the installation media, here's what you'll need:. A PC with a reliable internet connection. The download time will vary, depending on your internet connection. A USB flash drive, external hard drive, or DVD. A blank USB flash drive or external hard drive with at least 8 GB of space, or a blank DVD (and DVD burner). We recommend using a blank USB or blank DVD because any content on it will be deleted. When burning a DVD from an ISO file, if you're told the disc image file is too large, you'll need to use dual layer (DL) DVD media. Your 25-character product key (not required for digital licenses). For help finding it, go to Find your Windows product key. After you've created the installation media, you can reset or reinstall Windows. To learn more, go to Recovery options in Windows. by Jenefey AaronUpdated on 2021-12-22 / Update for Fix Windows. It happens more often that it should be: your computer is failing you, and you can’t use the CDs or DVD installer because there’s no optical drive. What can you do to get your back on your feet? You can use a USB drive to boot or reinstall your Windows. And for today’s tech world, a USB drive is a better solution because we can safely say that almost every computer on earth has USB ports. If you are ready to get your hands dirty, let’s start. As the title suggested, you need an empty flash drive or any USB storage that you can put your hands on. It should be 4 GB in size if you plan to install the 32-bit version of Windows 8 or 8.1, or 8 GB drive for the 64-bit version.