I have 2 GB of RAM, but I can't install BlueStacks. Can you help?
This is not the only requirement for BlueStacks. You need to have also at least a dual core computer with Windows XP, Windows Vista, Windows 7 or Windows 8 and a dedicated graphics card. For further information, I suggest you check the official installation requirements for Windows XP, Windows Vista and Windows 8.1/8/7.