a few months ago i upgraded my old pc with 2 more gb of ram (4gb total now) and since them it seems really random if the pc decides to make all RAM work or just 2gb, a recent fix i found was removing and inserting again the bios battery, which fixed it for about 2 weeks but now its back, i have a suspicion that it might be windows writing something to the bios that makes it think it only has 2gb, seeing as everything works well when i removed and inserted the bios battery, is there a way to like keep windows from messing with my bios setting or something?