Make sure all of your RAM modules are fully seated and locked in their slot . . . ditto for the graphics card. Consider clearing CMOS by disconnecting power, removing the CR2032 coin cell battery, holding in the power button for 30 seconds . . . then put her back together and try to boot. Post some photos of the inside of your rig.
My Aurora R10 has stopped powering the monitors, keyboard, etc. Nothing internal is disconnected, all fans spin when the pc is powered and is clean. I have just finished installing a Corsair H60 but  everything seems fine internally apart from the fact that the monitors and what not aren’t getting powered on.
Aurora R10, 2-1 Amber lights