The following resources can help you solve problems and are listed in order of increasing complexity. The system is most efficient if it is effective at the lowest levels and only if the most difficult problems are passed on to the highest levels. The computers you have received are complex technical devices - but they are very, very reliable.
Most apparent problems are relatively simple to fix.
Colleagues - Your colleagues are one of the most useful resources for help. Other teachers, especially those in the program who are using computers just like yours may have solved problems similar to your current problem. Be sure you know who your mentor is. Mentors should be contacting you periodically to be sure things are going well. Mentors are very useful for linking to people who may help.