GA-Z68X-UD3-B3 not booting up

hi has anyone else had this problem my gigabyte GA-Z68X-UD3-B3 rev 1.0 borad wont boot up

i have just built this system
i5 3330
250gig windows drive
two gtx 550ti
1000W iCute Modular ATX Quad VGA Power Supply

it powers up then shows nothin and dont make any beeping noises etc then turns off then back on again then of again so on so forth any ideas would be greatly appriciated and i dont want update bios cus i cant cus it wont boot to post bios etc just nothin many thanks again
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  1. Hi, The board might need a BIOS update http://www.gigabyte.com.ro/support-downloads/cpu-support-popup.aspx?pid=3852
    Try though taking the board outside the case and test it there to rule out a shorting issue.
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