Sometime during the semester, you must work on at least one computer for a "customer". Some of the jobs you may do:
repair a defective computer,
do some preventative maintenance,
install software,
remove viruses, or
reinstall Windows.
Not all jobs will be worth full marks, which means you may have to do more than one job to earn full marks.
See the instructor for details or before proceeding with a job.
This is something you should starting thinking about early in the semester.