Hey,
My computer turns on (shown by all my blue ledness) but doesn't even go into BIOS or boot... or anything. I've used different cables, different output types (DVI, HDMI and VGA), used three different WORKING monitors and to no avail. I have also tried using a Radeon HD4650 and integrated graphics.
Specs:
Intel i5-2400
Antec A30
CoolerMaster Masterbox 3 Lite
ASUS P8B75-M LX PLUS
GALAX GeForce GTX 1060 (not bought yet, also don't tell me about bottlenecking because I'm upgrading in future)
Deepcool DE-580W PSU
some random optical drive I got from an old computer
1TB Seagate internal HDD
120gb SSD (not bought yet)
Windows 10