In Shopping Cart, not proceeding beyond checkout

Hello,
In shopping cart, I have list of products. After clicking on Checkout button at bottom, its coming back on the same page.
Actually I want to complete steps involved in order placement.

Please help as I am really stuck up on this for long.

Regards,
Mufaddal Hararwala

Are you suing mobile version?

Do you experience it on demo site?

What Nop version and what browser are you using?