I bought a stick of RAM from Dell (computer manufacturer) specifically for my desktop computer. I opened up my computer and inserted the stick, but the OS did not recognize it. Is there anything I have to update for the OS to recognize the RAM? I am running Windows Vista Ultimate. I have tried putting the 1gb (recently bought) in slot 1 and the 512mb from before in slot 2, and vice versa. The computer doesn't even start when the 1gb is in slot 1, as if the computer doesn't recognize that type. I bought the RAM from the company I bought the computer, and I bought it specifically for this model, so I would assume that they are compatible.
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