For next time....
If it's essential (and homework due the next day tends to fall into this category for any parent - you want to show it's important that work gets done on time, and that the work has a value) then enterprise practices apply. It doesn't need to cost big bucks to ensure data is backed up and there's a spare old workstation around that allows any PC to be expendable. Data is safe and homework can be finished on a working PC averting panic and giving time to fix the infected PC without having to miss an afternoon pigeon-holed as client time.
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