Microwave displays LOC or a lock icon; buttons do not respond except possibly CANCEL.

Safety first: No internal repair is needed for this condition.

• Disable child lock: On most Oster microwaves, press and hold the STOP/CLEAR button or the LOCK key (if present) for 3–5 seconds until the LOC indicator disappears. Refer to your specific model’s manual for exact steps.
• Power reset: If the lock will not clear, unplug the microwave for 1–2 minutes, plug back in, and try the unlock sequence again.