Entering the power saving mode shortly

Hello,
My monitor is stuck on power saving mode and it also keeps saying no signal please help

My monitor does not have a remote. Since my computer does not come on screen how do I shut off power saving mode

Hello, I'm in need of help of my LG monitor it keeps saying D- Sub, power saving mode? how do I get out of power saving mode?



System Configuration: Android / Chrome 59.0.3071.125

Hello,
I have bought a new PC and when I try to turn it on, its monitor doesn't work well while it just show this message
No signal
'Entering power saving mode shortly'
I would be grateful if someone help me to solve this problem.

Hello,

I have a gateway desktop that I got from my cousin and it's amazing for gaming. So, I'm pretty sure, it's custom made.

I unplugged some things to clean my room and when I tried to plug them in again, the computer would turn on along with an error message on the monitor.

It says that the cable I just plugged in is plugged in "power saving mode". This has happened once before which I came to this exact website and followed some instructions that I listened to and it worked.

However, the solution is not working this time. I've turned my PC off so many different ways that I'm scared I might have damaged the power supply.

This morning like around 9AM I decided to clean up my computer like anyone else would do. Now... I've done this multiple times and everything seemed to work fine but this time it didn't.
( I have a CYBERPOWER PC and a 6670 HD Readon along with the L-G monitor. ) everything was working fine this morning until I decided to clean up my PC.

Things I did
Opened my case up

Removed my graphics cards, RAM,CPU and my hard disk

I cleaned all the dust carefully and made sure I placed everything back in order

I tripled check to see if thy were any missing cables and everything was placed on its right position. ...