NFHS timing mistake question

[Nevadaref]

With 2:43 remaining in the 2nd quarter Team A takes a full time-out. The scorer records the time in the book and marks the time-out. At this school the time-outs are timed on the game clock. The time on the game clock disappears and is replaced by the time-out clock once the timer enters that information on the console. Following the expiration of the time-out and play is to resume, the game clock malfunctions and instead of restoring 2:43 to the game clock one minute appears. No one notices and the game continues.

Some scenarios:
A. The mistake is noticed with ten seconds remaining in the second quarter.
B. The timer notifies the officials of the error during halftime.
C. The timer notifies the officials of the error during the middle of the third quarter.

What can be done?