Thank you for using Just Answer.
Looking for quick fix for you -
Unplug the range for 5 to 10 minutes. This will sometimes reset a confused control board.
OR (easier) Go to your house's circuit breaker box. Flip the circuit breaker off for ten minutes.
Please tell me a bit more.
What was going on before this happened? Were you using the range and suddenly the oven display disappeared? If so, what were you dong with the range when this happened?
Did you wake up this morning and it was like this? Did you lose electricity before you noticed this?
We have seen instances where the reset "fix" took longer to take effect. In these instances the power was left off for extended time (hour or more). I know you don't have the time for that.
Also, when the range is NOT getting power, push all the power buttons on the range to get it to release any small amounts of electricity that are in the circuit.
Your welcome and good luck. Merry Christmas to you and your family.