I have Windows 7 Home Premium 64-bit on a Dell n5010 laptop. I purchased this laptop and everything was fine until I formatted it, and for some reason it now shows that only 2.93 of the installed 4Gb are usable. I checked the BIOS and it in fact shows that I have installed 4096mb of RAM as well as in the "System" tab. Is there any way to revert this and get the full amount of RAM working without having to re-format the computer or do anything drastic like that? I have attached a picture. Any help will be GREATLY appreciated, Thanks.