Hold the Home, Vol Down, the press power. When you see the recovery Android, let go of the two buttons. Then use Volume keys to select "Factory Wipe/Reset Data" use power button to select.
Then....When you see the setup wizard, I would power off, and flash with Odin one more time. With a good known image.
If you want to make sure, I can download the correct image files from Samsung for you. And tell you the best way. I just need you to PM me your model, serial number, and version off "Build Version" off the About phone screen.
Sent from my SCH-I545 using Tapatalk