Hi I own a Mac mini late 2012. Lately the device shows strange behavior. Sometimes the fan goes mad. I added a Crucial SSD. It still has the initial HDD too. The further specs are late mini 2012, 2.3 i7, 16 GB ram. Sometimes the fan is like really quiet. Then suddenly the fan goes wild. It keeps on blowing for a while. Then the fan goes quiet again. I do not know why this is happening. I added nine screenshots of activity monitor. At the first three the fan is quiet. The second batch the fan spins louder. The third batch the fan goes wild. Does anyone know what's happening? It happens on youtube, facebook and also playing Nox (android simulator). In the screenshots facebook is not activated. Thanks for your answer.