I originally had 2gb of RAM even though the computer I bought advertised 6. I opened it up last week and lo and behold, the chip was never installed or fell out, and was sitting at the bottom of the case. I plugged it in but windows is saying the entire 4 gb is hardware reserved. What can I do to make this memory accesable to my system? I've turned off Maximum Memory under the Boot Advanced Settings. I've physically reseated and tested each individual memory card.