Hi... thanks to a distraction i ended up connecting the 4 pin 12v atx
power supply from the psu to the motherboard\cpu the wrong way... it
was a 180 the wrong way... it sounded like a firecracker when i turned
on the machine and it went dead.... everything else was connected
right just that one stupid 4 pin 12v...

what might've got damaged... would the motherboard only got
damaged.... or the motherboard and cpu too... would other parts i had
connected like memory, graphics card, hdd etc damaged too... thanks

(it's an amd athlon 64 and asus k8v) :-(