I removed the old memory cards and installed a new 1G card and had Crucial rescan my system. They reported 512 meg of memory. I then reinstalled the original 2 1G cardsn rescanned and Crucial reported 1g of RAm with one slot empty. I only tried the new card in 1 slot. But again, with both slots filled with a gig of memory, the Crucial scan reported only 1 gig on board.
I see, yes this is a motherboard problem. I just wanted to verify the steps they took. I'm sorry. You can actually buy a replacement motherboard. http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0&_nkw=945GCT-M3&_sacat=0&_from=R40
You can also have it ordered directly from gateway. The only other thing you would need to do if you don't think you can replace the motherboard would in fact to have it taken to a local computer repair shop sometimes and this really depends. Sometimes they can repair also re flow the motherboard. It's usually cheaper to just replace it.
I can replace the board as long as you are certain that's the problem.