You're welcome. My previous post was going under the assumption that your bios was set well, because you clearly stated: "I have followed the recommendations." Well, (I know unintentionally so no worries) - this is clearly not the case. Your bios is set waaaaaaaaaaaay wrong. You need 667 MHz with 9-9-9-24 timings for the RAM. Right now, you are at 800 MHz with 9-9-9-27 timings. Needs to be fixed.