I have an Advent DT1404 desktop. It is from around 2009, and ahen I turn it on, the fans spin and it turns off. I bought it a week ago, from a trusted person, and I was shown it working. The inside is immaculate, no dust or any kind of debris, I didn't even know that it was that old till I researched myself. Why does it turn on, the fans spin for a second, and then it turns off?