After flashing the latest firmware to my Seagate Momentus XT hybrid drive, it’s time to install a fresh OS. I decided to give Windows 7 x64 a try. To speed up the installing I choose to setup using USB instead of DVD drive. Following two guide will let your prepare a USB Drive for this.
This guide is for Windows XP user http://www.blogsdna.com/2016/how-to-install-windows-7-from-usb-drive-without-windows-7-iso-dvd.htm
Edit: After went thru all the steps, fount another guide which comes with a tools to do it. http://www.intowindows.com/how-to-create-bootable-windows-7-usb-to-install-windows-7-from-usb-flash-drive-using-windows-7-dvdusb-tool/