I got this cheap computer the other day and i decided id put some more memory in it so i could play world of warcraft. It started with 320mb total but i got another 256 so i could get 512 total with 2 256s but when i try to put in the other 256, the computer makes a beepig sound instead of working. It works when i take the first 256 out and just use the 64(im guessing it has no label) but when i try to take out the 64 and use only the 256 or both, it doesnt work and just makes the noise. Whats wrong with it? its a dell optiplex gx115. Is the 64 stick somthing special or is it somthing else since i dont actually know if its only a 64, the computer says theres 320 total so im guessing its a 64. What can i do to fix it and how can i get 512 total in the computer.