。
The kettle is whistling on the stove.
Literal
Kettle [subj-が] stove [gen-の] top [at-で] chinchin make-sound-[ongoing-ています].
チンチン is onomatopoeia (擬音語) for the high-pitched metallic ringing of a boiling kettle. The verb 鳴る is used for inanimate things making sounds (bells, phones, kettles) — distinct from 泣く (cry) or 鳴く (animal cry) despite the homophony. で marks the stove as the location where the sound is happening (locative で, not instrumental).