I built a computer for a friend, and it is having really strange problems. It has a shuttle nforce2 board, amd xp 2500, pc 3200 ram, and ati 7500 video. The power supply is Tt. When the power swith on the PS is turned on, the system immedialt boots up, without touching the other swith, and there is no picture on the screen. It turns off by itself shortly after. The case power swith is useless. Turning the PS switch off and then on again will result in the same scenario (boot up by itself for about 5 sec). This is really wierd, and I dont know why it is happening. Please help