Not sure why everyone is flaming the OP. If you (re?)read their post, s/he said they want to document what happened in case the laptop fails.

(This scenario has happened to me, i.e. get an electronic device wet, it works shortly thereafter, then fails a day or two later.)

At this point, the only thing I think you can do is fire off two quick e-mails -- one to Delta, one to Comair -- notifying Delta and Comair of what happened. Perhaps say that everything is working fine now, but you want to document what happened so that if the unit should fail, you can be compensated?

(By the way, can we please do away with the beverage service on sub-one hour flights? Can people honestly not go an hour without a handful of peanuts/pretzels and a splash of coke?)