Chicago PD does not have a Commissioner. The top level officer of the police is called Superintendent.
Steve Urkel is a Genius, which has been stated on many occasions, and even if you didn't known that before he created "The Belt you can wear so no one can hurt you", you would definitely know after. Now if Steve is such a genius that can create all these scientific breakthroughs then he should have been able to just repair Laura's computer. That plot hole makes Eddie and Steve's adventure in the tough man competition completely pointless.