Need Help: Is MOBO dead?

[oubrett]

I have an Intel quad-core based system with an Asus P5Q3 mobo and 6 gigs of ram
The system has performed flawlessly for 10 months then yesterday it shutdown randomly. I tried twice to restart -- fans and lights would come on for less than a second and shutdown. Cables all seem properly attached. MOBO has green light so I know power is flowing. Since system won't post, am I right to think the mobo is dead? Any help is appreciated!

 

[Ritwik7]

First thing to check would be the PSU. Which one do you have? Try replacing it with a spare one if possible or borrow a known working PSU from someone.

 

[oubrett]

Power supply

I have a corsair 750w psu

 

[Ritwik7]

That is an excellent PSU. Should be more than sufficient for all your needs. However, to eliminate the possibility of a damaged PSU see if you could borrow a different one or test your's on another system.

But it seems like a dead mobo.