On the Subject of Cruel Flashing Rotating Squares

Words. What are they worth now?

On the module are 16 coloured squares, arranged in a grid, on a circle plate.
Each square will randomly flash Red, Yellow, Green, or Blue.
All but one square will always flash all 4 colours in a cycle.
The square that only flashes 3 colours is the Dead Square.
When the module activates, you have 40 seconds to identify the Dead Square, and press an unused square within the same row or column as the Dead Square to disable the module.
Pressing an already pressed square or pressing in a wrong row or column will register a strike.

Each time the module is deactivated via correct presses, the circle plate may rotate.
The plate will rotate by anywhere from 10 to 1080 degrees in either direction.

When all 16 squares have been used up, all squares will briefly flash the same colour and return back into the unused state.