Running x64 for a year with no problems, and now running into BSOD's. I only have two since the one prior to that ruined my Win installation and it couldn't be repaired. So I bought a new drive to run a new install. The 1st dump is right after the new install, and before I ran a driver check and found that my Nvidia driver could be updated. I updated, and have been running with 1 stick (2GB) of RAM since, 1 week with no BSOD's. I had tested that stick with Memtestx86 with no errors. This morning I put my other stick in (by itself) to test and it came out without errors also. So, I added the other stick back and ran for a little bit, then shortly after another BSOD. I have tested both sticks separately and both passed. Thinking maybe might have something to do with the RAM slot on the motherboard?