Well i've tried both sticks individually, they both have the same affect. It starts up, gives one long beep then a moment later, 1 short, which is the code for the DRAM or M/B error. It then sounds like it tries to start itself up again, it does a single beep, slows down then tries to start up again, does a single beep... etc.
I imagine this is the computer repeatedly attempting POST. At one point I did manage to get a display that said OC failure, enter setup to 'something' OC; I cant remember it exactly. Before I could enter setup it died again.
So what's OC?