[Solved] Can't even start up?

[davidgotmilk]

Hey guys, so my build is a i7 3770k, with a ud5h motherboard, and a 660ti. My problem is when I turn on the computer with the 660ti plugged in, nothing comes up, it turns on, but doesn't even reach the gigabyte splash screen. If I unplug it and boot, everything works fine. I can boot Into my disk, and get to bios and everything. I'm using a spare 430 watt psu to power it while I wait for my 550 watt one to come in, but I don't think wattage is the issue. Any help here?

 

[davidgotmilk]

Can't even start up?

I feel incredibly stupid...I just realized I hadn't plugged the HDMI cable into the 660ti. May my stupidity be a lesson to all.