There is absolutely no shortage of free tools to load Windows 7 installation files onto USB and then install Windows 7 from USB drive. There are free tools such as Ultra ISO Maker, EasyBCD, WinUSB Maker, ISO to USB, and Rufus. About ten months ago, we even showed you how to easily install Windows 7 from USB drive without using any third-party tools and also how to install Windows 7 without optical drive.
Up until now, users who purchased Windows 7 from Microsoft Store and downloaded the ISO file of Windows 7 had no option but to use third-party tools or the Command Prompt method to prepare bootable Windows 7 media. Microsoft has now released a free tool named Windows 7 USB/DVD Download Tool to help users easily create bootable Windows 7 DVD or USB using the downloaded the ISO file.
The Windows 7 USB/DVD Download Tool allows you to create a copy of your Windows 7 ISO file on a USB flash drive or a DVD. To create a bootable DVD or USB flash drive, download the ISO file and then run the Windows 7 USB/DVD Download tool. Once this is done, you can install Windows 7 directly from the USB flash drive or DVD.
Using this tool is fairly simple. Run the tool, browse to the ISO file location, select your USB drive, and then click Create button to begin preparing your bootable Windows 7 media.
For novice users, we have prepared a step-by-step guide on installing Windows 7 from USB using Microsoft DVD/USB Download Tool.
# Windows XP SP2, Windows Vista, Windows 7, Windows 8 (32-bit or 64-bit)
# Pentium 233-megahertz (MHz) processor or faster (300 MHz is recommended)
# 50MB of free space on your hard drive
# DVD-R drive or 4GB removable USB flash drive