new build wont post

[Nodiggidy123]

recieved my 920 do and gigabyte ud3r this morning but i cant get the bugger to post. ive tried different ramsticks and even have the system on a bench at the moment to eliminate shorting. im getting no error beeps whatsoever.

any other suggestions?

 

[panta]

Full specs?

 

[Nodiggidy123]

6gb corsair xms ddr3 ram. bfg 280gtx gpu and bfg 800w psu

 

[Essexraptor]

I take it that the MB has led indicators like the UD5? (have'nt had time to have a look at the spec) they may give you a starting point to no post.