iMac not starting up

I have a 5k iMac with maxed out specs. I was working today and everything just locked up. I had to do a hard shut down by holding down the power button till the screen went black. When I try and restart the screen stays black, but not solid black like there is no power, seems like it lightens a bit, but no apple logo, no chime. I tried seeing if I could boot into safe mode, but same thing.

Did something just die in my iMac? Is there something else I can try? Running latest version of OS X, 24 gigs of ram, the upgrade gpu for the 5k iMac, and 1 TB SSD.

via ehMac.ca http://ift.tt/1GJ7dsQ