Hi all, I'm replacing a cracked screen and digitizer and in the process of re-assembling it. As near as I can tell, every connector is mated and everything is in place, but nothing is screwed down yet. I'm trying to see if the display is functioning before I complete the assembly. When I connect the power, the light by the power cord comes on, and when I push the power switch, the power light by the switch comes on, but nothing on the screen. I tried connecting an HDMI monitor but that screen is blank also. The cooling fan is turning but I'm not sure if the HDD is spinning. I tried booting from a bootable USB stick, but same. Where should I go from here? Thanks, Jim