i have a pc that i built about 2 years ago has worked fine but yeasterday when i tryed to turn it on my monitor will not communicate with the pc tryrd connecting monitor to laptop and it worked fine also tried all 3 connection on my video card (vga,dvi, and s-video) none of them made the monitor come on and the pc sounds like everything is running normal what could it beTry removing a side panel and removing the vid card and re-seating it...
As always when working INSIDE the case remove all power sources and take anti-static precautions.

If this does not produce good results then swap it into another working machine to confirm that it is dead...tryed putting the video card in a DIFFERENT computer and its like the video card worked but it didnt the monitor seemed to detect something but just displayed a blank black screen could that be because thedrivers were not installed on that pc which means the card is good and its something else wrong in my pcthis is not true.
windows has a generic driver that will run any video card.
so that black screen is (most likely) the video card.Why would you not INSTALL the drivers in the other machine ? ?
After all we're TRYING to determine if the card is bad or not...