Hi all! I've just recently put together my first pc and used the following components: Asrock 4coreDual-Vsta Celeron D 356 Leadtek GeForce 7600GT Samsung 160 gb HD 2x512MB ram Viking 350W power supply The problem that I'm having is the following; when i plug the power cord into the power supply my computer just starts up, without me pressing the on/off button and the screen remains black, also the pc speaker remains silent and doesn't give any beeps so that I could find out what the problem is. At first I thought it was the motherboard that was the problem so I returned it and got a new one, but the problem still remains. The graphics card, ram, hard drive all work perfectly well on my Asus K8V-VM with an athlon 64 3400+ processor so that leaves only the Celeron D questionable. What are your thoughts on the problem? Tnx in advance.