I was playing a video game online and my computer froze so I rebooted it and now I get a "no input signal" on my monitor. I changed out the video card and same thing. I changed out my Towers completely to make sure it wasn't my monitor and bam I am using my old tower to right this. I bought a new card to see if that would work and it still says the same thing. If anyone at all has any insight or suggestions of what could be wrong please respond to this so I can fix my other tower. Much appreciated!!