ASUS A7V600-X MB AMD Athlon XP 2600+ (FSB 333MHz) 512MB PC3200 Mushkin I have tried three different PowerSupplies. Every time the computer will power on for about 2 seconds then shut off. Could it be I'm using PC3200? I don't have any PC2700 to test with. Motherboard is brand new, CPU works in another computer. Any suggestions?