Murphy's Law states that if something can go wrong, it probably will. When computers are a part of your life, you should plan for the unexpected and avoid neglect.
Online educational programs require access to a computer. Students should make prior arrangements to continue their work after disaster strikes. I once experienced the adversity of a system board major meltdown on the day a final assignment was due. I was able to revive the system in a couple of hours by replacing the system board with a spare that I had on hand. This situation would have been much worse for someone lacking the ability to repair a PC.
Most facilitators of online classes will classify the excuse that your system was down somewhere in the relm of "my dog ate it." Make sure you know how you will deal with the situation before the necessity arrives. Some suggestions are to gain authorization to use a PC at work or make arrangements with a family member or neighbor. You may also check with your local branch of the public library. Note, however, that some institutions have minimum system requirements and there may be some settup necessary. This may pose challenging if you try to line up a PC to borrow.