If your screen becomes unresponsive when submitting an assignment to Turnitin, it is most likely an issue with your browser's cookie settings. The cookies used by Turnitin are known as "third-party cookies," which are not always automatically accepted by browsers. To fix the problem, you will need to adjust your settings to accept either all third-party cookies, or all cookies from turnitin.com. Once you enable the cookies, log out of Blackboard, log back in, and try to submit your assignment again.

Instructions on how to enable cookies for your specific browser can be found at these websites: