Ok, so I got my mobo back 2 days ago. The vista installation went great, first try no bsod (i know it should ALWAYS be like that, but first time it didnt work that well). I had both sticks of ram in and it booted and was working in slots 1 and 3. Then about 1 1/2 hours later, I get a bsod for irql error. I reboot thinking w/e Ill see how persistent it is. It keeps doin this with about the same intervals. So, yesterday, curious, I took the stick in slot 3 out and it has worked perfectly since, no bsod and the comp was on for several hours. I decided to check both sticks with memtest86+ over night monday night and within less than one minute I got several errors, so i took out the stick in slot 3 and let it run for 9 hours. No errors. I had the other stick in by itself last night for 14 hours and no errors. So, my only guess is that this could a result from how sometimes you might get 2 sticks that dont work with each other? I'm all out of ideas, besides the fact that I prolly will RMA the ram anyway to see if that fixes the problem. Anyone have any ideas? Thanks!