After a power cut a friends PC no longer works. It makes noises so ive been told but just wont work. They're bringing it round tonight for me to have a look at. Im guessing its fried the mobo, but because its making noises, the power supply is ok? Am I right?
Most Dell psu's are like you said...strange sizes.
You maybe able to connect up another psu outside the case. What i normally do is lay a piece of card on the open side of the case and connect that way when testing a psu or mobo.This will depend on if you wish to remove the mobo and cable/s lenghts.
My thoughts are that it as messed the Hard Drive boot files up, They are corrupt as it would most likely be writing to the disc when the power went down. You could try running Repair with XP cd if that is the OS