Hi, This is my first post. I am having a problem with a HP Pavilion 793c computer. It will die at random times. When I try to restart the computer, the power button will light for a moment and then go off. I can reset by unplugging for 25 sec. and replugging. Sometimes it will start and other time the power light will flicker and at other times it will not do anything, until I unplug and reset. I am running Windows XP home edition, double booted with Ubuntu 9.04. The problem started before the Ubuntu install. Could it be the power supply?