System crashes while booting, or consistently crashes early in use.
The heat sink and heat sink adapter are not installed properly. When heat is not effectively conducted away from the processors, the system becomes very unstable. Because the symptom occurs well before any damage is possible, the Encore Duet and your computer are safe. However, the processor card will need to have adequate cooling before you continue to use it. Be sure that the Duet heat sink adapter lays flat and even across the top of the Duet card, and that the Duet, the heat sink adapter and the heat sink, and the clips are installed properly.