Instruct: Classify the following sentence into a predefined topic category:
had a system crash, had to reboot w/ p.c. system restore- lost files i needed, how can i get them back/can I?
Assign it to one of the following topics:[Society & Culture, Science & Mathematics, Health, Education & Reference, Computers & Internet, Sports, Business & Finance, Entertainment & Music, Family & Relationships, Politics & Government]
Output: