I decided to upgrade the ram in my laptop. Both new sticks are the same. When I installed both, the laptop would turn on (the keyboard would light up), but the screen stayed black. I tested both ram sticks individually, and one of the sticks works just fine in both ports. Laptop boots up, no problem. The other stick doesn't seem to work in either port. At least, the laptop screen won't turn on with the second stick. I'm just making sure it's the stick of ram that's faulty and not something I'm missing since in other posts, when someone has a bad stick of ram, they seem to at least get an error or a continuous reboot or something. I've got nothing. Is there a way to check for sure that the ram is bad?