The easy way is back your personal files to USB stick. Then without the Ssd plugged in boot from windows 7 cd or hirem bot cd or disk tools. Format the hard drive then exit or stop. Power down and unplug the hard drive data cable and install the Ssd. Boot up and run the windows installer. When the installer is done and your in windows. Power down and reconnect the hard drive. On reboot windows should give it new drive letter and show up under my computer. If not use window disk management to add the drive.