i'm not at that stage - i've put the RAM and cpu onto motherboard and just wanted to check it was working. i've connected the psu cables - cpu cable and power - and the cpu fan is connected to the cpu fan connector, but nothing happens apart from the asus light coming on in the corner of the board.
do you mean ATX 24 pin main power connector? If so done that.
Before i connect everything to monitor, i thought i could just switch on to see if board and cpu were working? and when i try, only the board lights up and the cpu fan doesn't spin.
The odds of a CPU being DOA are extremely small. I would say that its far more likely that one or more of the CPU mounting pins on the motherboard is bent/broken. Check the pins for anything that looks out of place.