My monitor says no signal but its plugged in

starwars245p

Prominent
Sep 22, 2017
90
0
630
So about a week ago i unpluged everything in my pc to bring my tower somewhere, i havent used my pc in about a week and i plugged everything in to the pc like normal including the monitor and it says no signal, buy my pc is on. The monitor has no input button and its a hdmi cord, and it worked a week ago.
 
Solution
Shut it down, reseat the GPU. Does it work now? If no, shut it back down and reseat the ram and anything else other than the CPU that might have come loose.