Hello my friends. Bought AMD Phenom II x4 955, 4 GB DDR2 Corsair, GTS 450 1GB DDR, PSU AGILER 800W, 2 SATA HDD, MOBO BIOSTAR 790GXE. When I put everything and turned it on, just PH1 led would turn on (PH2, PH3 and PH4 are off). I took everything out, even cpu. Just connected the mobo to the PSU and still just PH1 lit up. Is my mobo defective? I tested 2 PSU (mine, Agiler 800W and an USA-NET 600W) and just PH1 led lit. What's happenning?