Computer Won't Boot With Multiple Monitors (Lights Flash, But No Boot)

[nebji123]

When I try to boot my computer with more than one of my three monitors, it flashes the lights but wont boot. I can unplug two and the last monitor will allow it to boot, and then I can plug in the others after it begins the boot sequence. The PSU is a 735W Full Modular from Raidmax and I am running an i7-4790k and an EVGA GTX970 on an Asus Z97-K Motherboard. I have already reset CMOS and I am wondering if it may just be a bad PSU?

 

[sadams04]

In what combination are your monitors connected? All on the GTX 970? One or more on the onboard HD graphics, then the other(s) on the GTX 970? Which GPU is set to the default in the BIOS?

 

[nebji123]

In what combination are your monitors connected? All on the GTX 970? One or more on the onboard HD graphics, then the other(s) on the GTX 970? Which GPU is set to the default in the BIOS?

I have each monitor connected to the 970. DVI, DP and HDMI. Not sure about that last part in the BIOS. I looked and could not find it.