Based on the context and the answer, generate a question. 

Context: I tried to schedule a recording to start at the next hour , and it did n't . The TV schedule was fine and thought it was recording , but the DVR had not received this message . The FiOS DVR help screens were 100 % useless , so I poked around online and found the only suggest was to reboot the DVR .

Answer:

There 's something wrong with their DVR .



What may be the reason their show was n't recorded ?