What is your Corsair memory model? Mine is Corsair CMD8GX<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="3" UnitName="m" w:st="on">3M</st1:chmetcnv><st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="4" UnitName="a" w:st="on">4A</st1:chmetcnv><st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="1600" UnitName="C" w:st="on">1600C</st1:chmetcnv>8 with P55-UD4P and there is no problem at all. I think it may be some compatibility issue with certain memory.