I'll give you a youtube link, you turn the video in .avi, then you make a C++ program that follows this description:
When first executed, wait 15 minutes until:
- Kill all processes that aren't from system
- Play a uncloseable movie in full screen (that .avi file)
The program need to start with the windows after the first execution.
Observation: If the program is executed with the -debug paramenter, it should not start when windows and will only run for 15 seconds.