I used G.SKILL.COM Ram Configurator to find faster lower latency DDR2 for my MSI K9A2 platinum mobo, it suggested the F2-6400CL4D-4GBPI-B DDR2-800, so I bought 2 pairs. They arrived yesterday afternoon, I installed them and Windows wouldn't boot up, so I removed one pair, and then Windows loaded right up, changed to the other pair - same results, Windows booted fine. But when use all 4, it's back to square one. Any suggestions?
AMD Phenom Quad Core 9850 black edition
2 - Hitachi DHS721010 1T hard drives
Corsair TX850W PS
2 - ATI Radeon HD5770 1gb DDR5 (Crossfired
Windows 7 Pro 64bit
Ask what settings they use when installing 4 modules; installing only 2 modules rarely is an issue. Hopefully 5-5-5-15 timings at 1.9V will work. If everyone else with the same motherboard doesn't have an issue and you do, then it's also possible that your motherboard developed a problem and needs to be replaced.