Abit SA6R + Pentium 3 750mhz = will not boot or even post. I have checked out the video card, the power supply and the memory. When I power up, the fans kick on, but nothing on the screen and the hard drives stay silent. If I disconnect the hdd from the board and leave it connected to the power supply, I can hear it whir up when I first press the power button, but still no video/no post. How do you decide whether it's the mb or the processor that's bad? This system was working fine in May and has sat around since then until I tried to turn it on today. Help.?