Crosshair V formula-z wont post, FF error code on MB. (just upgraded to watercooling)
Hello,

I have recently upgraded my build to a custom water-cooled loop. I have a SB water-block and a water block for my FX8350 cpu. My MB is the Crosshair V formula-Z ROG series. Every time I try to boot up my system the system won't display my boot up screen so I can't see if it is going to BIOS or not. The monitors aren't reading the display (tried two monitors with HDMI and DVI). I don't have a MB speaker so I can't verify if anything is working or not. I checked my Video card with another computer and its fine. The card does display with the other pc.


My build specs....
Crosshair V formula-Z
cpu: AMD FX8350
RAM: Corsair Dominator (8x2) 16gb
VGA: XFX radeon 6870 2gb
cooling: custom watercooling, 420 triple radiator, Swiftech MCP655-B pump
HDD: OCZ RevoDrive 3x2 PCIE SSD 256Gb
PSU: ANTEC 750w Earthwatts

Note: I have been having problems with my 24pin PSU cord. coputer flicks on and off when 24pin is plugged in to my motherboard. The slightest touch to it will turn off the computer (ordering 24 extention cable) I thought my PSU was the issue but I tested another PSU and its 24 pin and that PSU 24-pin cable seemed to work fine but still not booting....so, for starters I have identified my PSU issue but even when I used the other PSU I still couldn't boot my system up.

I am reluctant to check my cpu to see if it is fried. It is under a custom water-cooled loop and it would be a hassle. i will check it after I have exhausted all other alternatives. (tried it...cpu not damaged. pins ok)

I did read somewhere that someone else's crosshair V was having the same issue (posted on this forum) and he found out that his system wasn't booting because the MB didn't read a cpu fan on the cpu fan header so the computer used its fail-safe system and didn't boot-up to protect the cpu....now I have plugged in my RPM three pin pump connector to my MB CPU fan header and I am still unable to boot.

Also my LEDS on my keyboard/mouse aren't turning on either. I tried y MB I/O as well as the Front I/O and neither seem to detect my devices.

My PCEI SSD LEDs do turn on yes and the AUDIO red LEDs on the MB do turn on so I a getting some amount of power.

what could my issue be? I have done all the checking of wires,, the 8 pin, 4pin, 24pin.....all are plugged in. reset cmos, still nothing. Bios is updated on MB and on SSD to most current. now I did have some problems plugging in the 8 pin and 4 pin cables to their respective MB connectors but they are firming sitting in their seats...could it be a bent pin maybe?

Any help would be greatly appreciated.

update 1: tried MB speaker..no beeps
update 2: took out BIOS battery...didn't help
update 3: reseated both memory modules separately, checked condition of cpu/cpu pins and unplugged PCIE SSD from board....still no boot to bios.
Update 4: new 24-pin cable didn't help any. Still not booting :'(