Antec PSU TPII 550 Not Working

[fraps]

Hi all,

Just recently bought an Antec PSU TPII 550Watt for my pc. Anyhow I connected the psu up, and then turned it on. Only the motherboard light turns on, but the pc does not. I have doubled checked all the other connections (power,reset, etc) and all seems fine.

Any ideas what might be causing the issue?

Cheers

 

[fraps]

It worked fine with the previous psu I have just replaced (Orion XP400 420watt)

 

[fraps]

How do you jump start a mobo?