I just picked up an used Mac mini 2009 2ghz C2D 1gb ram. This will be used as a headless iTunes server. I've upgraded to a ssd which works fine. I've upgraded the ram. It came with 1gb so I bought a 2gb stick, so total 3gb. The issue is that the computer only sees memory installed in the slot 1 closest to the logic board (bank 0). 1. I've tried swapping the sticks and they both work but only when installed in slot 1. 2. I've installed one stick at a time in slot 1 everything worked. 3. I've tried installing to slot 2 only, both the 1gb and the new 2gb stick computer beeps on start and refuses to start up Is slot 2 on the logic board fried? Do the memory sticks need to be installed in pairs? Do the pair of sticks have to match. I'm so confused. I don't have the Apple Hardware Test unfortunately. Any tips?