Final answer:
The given sentence is not punctuated correctly. Adding a comma before the name 'Steve' would make it punctuated correctly.
Step-by-step explanation:
The following sentence is not punctuated correctly: Checking the computer system, Steve discovered a virus. The sentence is missing a comma before the name 'Steve' to separate the introductory participial phrase from the main clause. The correct punctuation would be: 'Checking the computer system, Steve discovered a virus'. With the added comma, the sentence is punctuated correctly.
Learn more about Punctuation in English sentences