Hello, i have a INTEL DH67CL MoBo, with a 4gb Hynix Korea 03 and another 2gb Hynix Korea 03 , and i bought a new 4gb FURY HYPER RAM, but when i tried to put it, my pc wouldnt show video, so i tried without the old RAM using only the new HYPER and still it wouldnt work. Is like it doesnt recognize the new RAM About the RAM They have this number on a sticker: Hynix Korea 03 4gb 2Rx8 PC3 - 12800E - 11 - 11 E3 HMT351U7CFRR8C - PB TO AB 1207. Hynix Korea 03 2gb 2Rx8 PC3 - 10600U - 9 - 10 BO HMT125U6TFR8C - H9 N0 AA - C 1051. The HYPER sticker reads: 4GB DDR3 - 1600 CL10 240-PIN UDIMM HX316C10F/4 1.5V 1526 9905402 - 656.A01LF 0000007018626 - P001527 56L07-490PQC-5W57B The bios of my pc reads like MEMORY SPEED 1300 MHZ fyi.