Ok i built a pc with a core 2 duo 6 gigs of ddr2 ram and a dell inspiron 545s motherboard 400 watt power supply 250gb hard drive.And this is a sleeper pc so it is in a compaq presario SR1000 case and i am using the power switch that was originally in the case (also this is my first time building a pc after studying them for a year) So i put it all together and the first month it worked but the power button was not working so it would turn on by itself after plugging in the power chord.But now i get a black screen and no fan spin up but i swapped the bios battery twice but the orange light on the motherboard still shines when i plug it in.At the computer store the guy there thinks it is the power supply but i also tried a 300 watt power supply on it but it still does not work also the CMOS is weird it has 2x3 pins with little sleeves over them.I played around with those and tried resetting the bios but still does not work.And also this is the second motherboard i went through on this pc but this motherboard is brand new so i know it works someone plzzzz help me
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