So the pc doesn't even boot with one dimm in onez of the right dimm slots ? The pc no longer posts with one dimm installed at all ?
I really think a) you got a hardware incompatability here or you got the same dud board back as before... with ram in the 2 left hand slots it works ? did you try upping NB voltage ? setting Dimm voltage at the correct value ?
Can you plz fill in this template and send it to me plz so I can check what is set and what not :
http://users.pandora.be/OAP/P5QDlx/P5Q%20Dlx.rtf
And list all ya hardware plz...