Regarding starting screen of Jetson tx2

I have been using Jetson tx2 board after flashing. I was trying to compile a software on the board and suddenly it went to login loop and now everytime I start the board I get only black screen with login. How can I get to normal Ubuntu login mode. Can you please guide me in this.

Hi f2013619p,

Are you using sdkmanager to flash image on TX2 device?
What image version are you using?
At first time boot up, you need setup username, password…for init process. After you can use this username and password to login.