Video card or mobo dead

[mattydog]

Hello, my screen froze for a bit, then all white, and now when I power on I hear the machine spin up fine, but I have nothing on the screens( 3 monitors - all black). How do I know if it's the vid card or the mobo or something else?

 

[mattydog]

Sys: Asus p8p67 Deluxe, Sapphire ATi 5770 Flex, G.Skill Ripjaws X 8gb 1600, Seasonic X750, Crucial C300 64 GB program drive.


I have cleared CMOS and keep getting VGA LED on mobo and can't boot into windows. My first thought was that vid card died, but there seem to have been a lot of people w/ this VGA LED issue and it also deals w/ RAM???

I built this system in April and have been running w/ no issues until this today. Would appreciate any help!