When you register for a class you are automatically enrolled into the Blackboard system for that course within approximately 6 hours. However, there could be several reasons why you may not see a Blackboard course.
Blackboard is offline for maintenance. Blackboard has an unexpected service interruption. Check Bb Announcements for a planned upgrade or maintenance schedule, or click here to see the schedule. If Blackboard is offline for maintenance, the splash page will look something like this: