Components on my system are as below. 1. Asus MOBO P5E-VM HDMI 2. Intel Quad 2 core 6600 3. Antec P/S It was working fine and suddenly hung. A few days back I upgraded the BIOS. Now it doesnt even power up. When I push the power on the Power fan starts and shuts off. I dont see the P/S fan running as well. I dont see the hard disk work too. The processor fan runs for a second and shuts off. The Green LED on motherboard keeps lit. But nothing happens further. The next time I push the power button neither the fan runs nor any thing happens. All the fans run only for 1st time I power up for 1 second and then halt. Next time I push the power button nothing moves. I checked the power supply it works fine. Checked the rigs for wiring looks fine. I doubted on the Mother board and went to fry's to get a new one. Same case. Changed the power supply same state. Need help. Appreciate earliest response.