Returned to my parked 2021 Model Y LR and the computer screen was not only dark but none of the accessories such as AC worked. Attempted several hard reboots with no luck. Was drivable at very slow speeds especially when accelerating from a stop. 91 outside, drove it to a Service Center with no AC where it’s been for the past 3 days. They indicate May have to replace computer. Waiting to hear further. 5500 miles on the vehicle.