I installed win 7 64 bit and everything installed and works flawlessly. However I noticed that it says I only have 2 gig of memory when in fact I have 4 gig installed. When I had XP installed it saw around 3 gig, but that was a 32bit OS so I understand that. I have the latest bios F17d I think it is. When the bios first goes through the booting process I can see that it only recognizes 2 gig also. I assumed it was Win 7 not seeing it, but it appears the bios doesn't recognize the 4 gig. Anyone have any clues or solutions? Thanks.