Hello, i bought a new stick of Kingston PC 3200 (400 mhz) 1 gb ddr ram and when I install it along with the previous 2x512 generic pc 3200 memory sticks I had the systems recognizes the new memory and boots fine, but whenever I start a game it freezes or I get bsod, memtest86 reports no errors, and separately (either 2x512 or 1gb stick) they seem to work fine, and games run normally, any ideas on how i could fix this and make the three sticks work together correctly? thanks!!!! pc specs: msi k8n neo4, amd athlon s939 3000, 500w generic power source