What socket are you on? This may sound weird but when I had my 8350 I had to take cpu cooler off the cpu fan header and put it on a standard system fan header then when it booted swapped them back round again
He said in earlier an earlier comment that everything spins up but no signal. Edit your post to avoid confusion. Also, clean your PC, disconnect and then re-seat everything, ram, HDDs, SSDs, video card, everything and try to boot again.