This system is only a couple of days old. At first I was using an Antec 500W PSU, and I remember that I had the full 6 gb RAM available. Then, sometime later, it dropped to 4,99 gb available. Today, I bought the new PSU, and now it's only 2 gb. Everything else is working just fine, I think.
What could be the problem?
Edit: I just tried changing it to the full 6 gb from msconfig's boot thing. It is now showing that 4,99 gb again. How can I get the full 6 gb? I does show the 6 gb installed, just the lower amount available.