I knew the screen worked so we went home anyway . There , I successfully booted into safe mode , then again tried agin to get into a normal boot , with the same results - black . Being impatient , I then choose Last Known Good Configuration and everything came up as it should .... sort of .

Question: What is likely to have recently happened to the speaker ?
Answer: They lost their boot .Their power went out .Their computer broke .None of the above choices .