Hello, Counter-Strike 1.6 is an old game, and I am sure you can run it perfectly having a computer with 2 Gigabytes of RAM. Two problems probably caused your game to fail. The first one is related to compatibility settings. If you have windows 7 or 10, you should adapt your game for this operating system. The second problem could be related to some drivers needed to run this game and which you don't have installed on your computer.