Hello guys, I got the 2x1GB 667MHz RAM as I said above but why when I did install them, I cannot start the computer? When I press the power button, there are 2 options (main idea as below): - 1. start window normally - 2. fix the computer (recommend). When I choose option1, the laptop restart but just go to the screen to choose the 2 options again. When I choose option 2, it checked the data but can not fix it, but I saw it got 2GB RAM on the screen. I did not know exactly what happened.