My son and I were playing and the system went black, nothing, nowhere. (I had changed the power supply before with no luck and ended up reballing the chips on the mobo.) So i had an extra power supply and it is up and running. I think the power supply cable gets hot and pliable and works loose and can cause a number of problems, mine had shorted or overloaded the power supply and blew. If they are loose they can get really hot and mess stuff up by not having a sufficient enough supply. Its purring now and I found a good quality power cord that fit snug.