Fixed! The problem with my pc was just the power supply - which converts AC to DC for the operation of a computer. It was too old and I guess too dusty as well. On the way to the computer shop, I dropped my computer box twice, except from the scratches on the external case, the RAM sticks shifted their places(and the little cooling fan on the motherboard is not working). When I turnt it on, my computer can only detect 64MB (of 256MB). So tested again and again for each stick in different receptacle. Now they works perfectly! So my pc is saved from the fate of formatting.
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UNSW singapore campus , officially starts in 2007? Wonder how many students will still go unsw sydney at that time.