I recently installed a used intel pentium 4 1.6ghz on my old motherboard ( Elitegroup ECS P4S5A ). I also installed used sd ram kingston 128mb. I have also installed a used cd-rom MAT****A and a seagate 4GB. I connected everything wearing my anti-static. But when i press the button of my computer nothing appers to the screen. I have used 2 different graphic cards but still there is no view!! I want to add that my cpu fan has no clip on the opposite side. What is the faullt ? Any help appreciated