Monitor Displays "No Signal" Message

So, I unplugged everything connected to my monitor (ViewSonic VA1926W) to connect it to a new computer. Then I had second thoughts about plugging my monitor into the new computer so I plugged everything back into my original computer exactly the way it was. My monitor is now just Displaying the "No Signal" error.
Help?

 

So you bought a new computer, and was worried about plugging your old monitor into it? So, you decided to instead replug it into the old system. And in the end you're getting a "no signal" error when you plugged it back into your old system.

Did you change anything on your old system?
Did you try plugging the monitor into the new system?
Was your monitor giving you any previous issues with the old system?

 

I did not change anything on the old system, The monitor was never plugged into the new computer, and this monitor never gave me any problems before.

 

Could be your VGA ports and/or graphics card. Could be loose wires from your monitor cord itself theres many of things really i suggest testing one at a time.

When plugging in your monitor cord try wiggling the cord itself around a bit making sure there isnt a loose wire causing the connection.
Make sure your gpu isn't loose inside your computer.

There the two main things i would check out^

 

Thanks for the help! It turned out to be that one of my VGA ports were screwed up!

 

not a problem glad to of helped! Glad too see you got it figured out as well