Hello, i recently decided to build my own computer. I have everything assembled, however when I turn the computer on the monitor displays a "no signal" message. I have recently exchanged the motherboard, video card, and processor for the same model. And when i took it to the computer store today they tested the system and said that the CPU was no good. Why isn't my monitor getting a signal. I know it's not the monitor since i used the one that i use normally on my computer i have right now. THe mother board is an ASUS K8N-E Deluxe with a ATI Radeon X800 XL video card and an AMD 2.8 ghz 3200 processor. Have a 480 watt Antec power supply. Please help because if i dont get this working my parents are making me return everything