Help me out here... my pc was working fine yesterday. I turned it on today and it...

[Cole Fleishell]

Help me out here... my pc was working fine yesterday. I turned it on today and it booted up and I seen the log in screen. I left it at that to go do some things outside and when I came back in my pc was off. Now I turn it on and my monitor tells me no signal. I haven't touched the thing so what happened? All my lighting comes on on. Gpu is lit up and so is my ram. So they are getting power? My display port is connected so I'm not really sure what to try first. Any suggestions?

 

[Brandon Wassmer]

Turn off, unplug monitor, turn on, turn off again, plug in monitor, turn on

 

[Zohair Alam]

maybe hdmi is loose