Create installation media for Windows 8.1.
FromMicrosoft:Create installation media for Windows 8.1 using either a USB flash drive or a DVD. Download (1.41MB)
Create a copy of your Windows 7 ISO file on removable media.
Prepare USB drive to be a bootable replacement for the Windows optical drive.
Install Windows/WinPE onto a USB drive and boot from it.
Restore files from USB flash drive.
Recover files from formatted hard drive, formatted card, formatted USB drives.
Defrag your hard disks and optimize the PC.