So I decided to swap my computer's case for a another tonight. I believe everything is hooked up properly, all of the fans are running, lights are on, disk drive opens etc. But, my monitor fails to recognize that it is attached to a computer. I tried switching to another monitor and my TV with no avail. I figured it was most likely an issue with my graphics card so I switched over to the on-board adapter instead but had no luck there either. I'm using the same power supply from my other case, a brand new 450W PSU. Everything ran completely fine before the switch. I'm totally stumped as to why my computer won't give off any video feed, anyone have any ideas?