Computer says nothing how can i tell if turbo cool 510 atx pfc is dead

[lookingforabetterveiw]

my computer worked fine the other day today it says nothing, so i brought a battery for it but nothing, how can i tell if the power supply is living or dead can you help

 

[davcon]

A good indicator.
http://www.youtube.com/watch?v=5FWXgQSokF4