I have a FOXCONN G31 motherboard with 2gb ram ddr2 800 mhz (ADATA SU2U800B2G-B U-DIMM) and recently bought another 1GB ram ( Transcend 599746-0876 DDR2 800 DIMM) , but when I put the 2 RAMs togheter the PC stalls before the windows start logo.. when the RAMs are alone one by one the PC start perfectly normal. Any help ?