thanks Torrent G and the windows 7 forum. After testing my other strip of ram over night i found 3 errors that where causing the bsod on my pc. i leave this for the people, If you are suffering from memory management bsods please, 1.please reduce to 1 strip of ram. 2.please test each of the strips of ram overnight with memtest. http://www.memtest.org/ 3.please check results and rma the bad bits of ram. 4.then have a nice day. its that simple.