Derek's Computer
Derek has a computer. Derek's computer got a virus on it. Derek couldn't use his computer once it had gotten a virus on it. Derek had to get his computer repaired. Derek's computer was usable once again after the repair.
Derek has a computer. Derek's computer was usable once again after the repair. Derek had to get his computer repaired. Derek's computer got a virus on it. Derek couldn't use his computer once it had gotten a virus on it.