Ace I have 64bit vista with all updates. Ive been only running vista on this mobo since Igot it when the ip35pro first came out. It has ran relatively flawlessly but I have done alot of ocing on it. I had phase on it up to 545fsb, now its water cooled with my sig rig setup basically. The mobo has the vdroop mod done about 6months ago. It has been running flawlessly with the Q6600 from before and the current 3110 which Ive had for about 4 months or so. Didnt have any complaints really until.....

I noticed about a month ago that it was only showing 3.1gigs in task manager. I couldnt remember if that was normal or not since it still showed 4 gigs everywhere else.

Then the few days ago I updated and required a reboot. WHen it rebooted it took forever and when I finally got into windows I realized that it was only using 256mb of ram. Even in safe mode. I checked with cpuz, hardware monitor, everest and the vista hardware tool thing and they all showed the correct ram of 4 gigs. I tried other known good ram as well and allways the same thing. WIll show correct ram in other programs but the computer only uses 256mb.

I think something is wrong with the mobo but if you have any ideas let me know. I appreciate your help.