you may have a bad hd or cd-rom drive or sata chipset if the system is boot hanging. i would unplug them and see if you can get into the cmos. also check that the i/o shield not shorting the mb out.
When I unplugged the 1 SSD and the HDD and DVDRW the picture changed but it's still the same thing just a a different sized image
ans I don't have a i/o shield on the mobo. Also what do you mean by getting into the cmos ? I thought you just press a button and or switch the one thing to 2 & 3 pin instead of 1 & 2 for brief moment than back.