I've had it breadboarded today, so it's not a shorting issue. The motherboard reads the CPU in the BIOS when I get it to post with RAM in slot 3 or 4 and the the pins don't look bent to me. And it reads the RAM correctly when it boots with RAM in slot 3 or 4. I'm also guessing I don't have a buzzer on this motherboard because I don't get any beeps when I have no RAM inserted. There are BIOS post codes on this motherboard. I always get the code 55 if I have RAM in either slot 1 or 2. I checked the motherboard manual and there's no 55 in the BIOS post code list. I get a code 22 for a few seconds when I have no RAM installed and then it also goes to 55 I'm coming to the conclusion that DIMM slot 1 and 2 might be bad on this motherboard. Does anyone else have experience with this particular motherboard?