My OS is Windows 7 Ultimate 64bit, motherboard: Asus P7P55D-E, processor: intel core i7 2.8GHz. I bought 4 sticks of Nanya-Elixir RAM (DDR3 4096MB 1333MHz UDIMM, CL9). After installing them, windows detects 16GB of ram, but says that only 8GB is usable :(. I thought BIOS update would help, but it only raised the usable space by 10MB -- before, windows reported 7,99GB as usable.
How to fix this?