Hello world !

My PC wont start at all, and 2 lights flashes : the power button plus a red light at 3cm of the bottom of the card.
All was fine since i bought it, almost 7-8 months ago.
Wont start = cpu/graphic card/screen, everything wont start.
I got gtx 580 gc, i7 proc, corsair tx850 alim, and 2x4 gigas ram patriot.
Any tips about it, or ideas why it wont start?
Thanks in advance,
Gru.