I just BUILT my computer, all of the fans are running, there is no beeping, and no negative leds. However, after I boot up my pc I receive no DISPLAY on my monitor. The monitor works perfectly, all of the monitor's cords work, and the gpu has no issues. I have tried plugging in the monitor to both my gpu and directly into the motherboard and still receive "no signal". All of the fans work when I HIT the power switch, only the display is not working. I've been trying to figure out the problem for 15 hours please help.Hey, I'm guest_30(the gal who had the same problem as you)
I ended up fixing the issue in my pc, but I'm not sure if it will work for you too or if I just got lucky.

I have adapter cables running from my power supply to my gpu because apparently you need those sometimes(I suck at hardware) anyways, when I went to un-seat my gpu and re-seat it I decided that I would redo the adapter cables too just because and some of the connecting pins weren't in all the way, I assume that when I repositioned my ssd earlier I tugged the cables slightly because the cable attatched to the pin is extremely loose and easily disturbed, I know it's a longshot, but it might be the same issue that you were having.Thanks, but I don't think that I have the same problem, I wired my monitor directly into my motherboard and it didn't work either. My motherboard might just be dead, but I want to confirm it first.Flip the ribbon around so that it connects to the center slot in the middle of the connection on the hard drive.If you are trying the monitor on the motherboard you'll need to remove the graphics card first, the onboard graphics are usually disabled when a card is detected. Can you provide a list of all parts used to build the system in case there is some sort of incompatibility?

What I'd do is simplify everything down - Run with just the onboard graphics with the video card removed, run with a single stick of RAM and disconnect all drives - You essentially want to try with the bare minimum to get the machine to POST. Also check the power connections to the motherboard, in particular make sure that the 4/8pin CPU power connector is connected properly.z170agaming M3 motherboard
i7 7700k cpu
gtx970 gpu
2x16g corsair ddr4 ram

I tried to simplify it down and it still didn't workSo after removing the vid card (did you do this yet ? ) and connecting to onboard vid you still get no display on a known working monitor...correct ? ?

What MBoard connector...VGA or HDMI ? ?I believe I have found the problem, my motherboard's bios does not currently support my cpu, so I am, going to have to use an older, supported cpu to INSTALL all of the drivers and update my bios.