Intel DQ35JOE Stuck at 5A

[DedoGamingONE]

I have a intel dq35joe and whenever i put a graphics card in there (with my hard drives connected) and boot, it only gets to 5A on the bottom right corner. it only gets further than there if i dont have any hard drives plugged in. If i use integrated or a radeon hd 3450 it boots into windows.
The graphics card im using is the radeon hd 6750.
I also have a 500w powersupply.
Core 2 Quad Q9505.