I have an A8N SLI premium, and I have been using 2 512MB sticks of kingston PC 3200 RAM, KVR400X64C3A/512. I just bought another two sticks of the exact same RAM and when I install them, my computer doesn't boot windows. I hit F8 and delete to go to the boot menu or setup, but nothing happens cause its frozen when that screen starts. I took the stick out of the B2 slot and it works with 3 sticks at 1.5 gb RAM. I also tried it with the 3rd stick in the B2 slot instead of the A2 slot and it didn't work. So, It seems that whenever the last slot is in use it doesn't work. I was also wondering that if I was stuck with 3 sticks of RAM, would the 3rd stick stop the other two from running in dual channel mode, and which combination would be fastest?
Oh man, so I tried more than 10 times taking the extra gig of RAM out and then putting it in again and messing around with the timing commands and every possible RAM combination i could. Then I took my original gig of RAM out so there was none in the computer, next I put all four sticks back in. I did nothing different than the other times but now it works! thanks for the help though
