I have had a SONY Vaio Digital studio desktop for almost one year. I have had no problems. The system never once crashed. Yesterday when I tried to power up the system it goes into this loop cycle. The power up led turns on , the fans will rotate for a second, and then the machine does nothing and the led turns off for a couple of seconds , and the cycle starts over. When the power supply is plugged in the green light on the motherboard turns on. I have extended coverage on this unit, that does not go into effect for another week. I called Sony and their desktop tech support is a joke. I have heard the sony line has some serious power supply issues. Does this sound like a power supply or a mother board issue? Any one deal with VAIO problems like this before? Any help would be appreaciated. Thanks.