Technology Forum

I am a newbie so far as computers are concerned. My two-year old AMD Athlon 64bit desktop with windows xp came with an ATI Radeon video card. I recently drove from Berkeley, CA to Eugene, OR, and found that there was no signal on the monitor when I hooked up my desk top to it. I tried different VGA and DVI cables and two different monitors. Thinking that the videocard must have come unstuck during the move, I then opened the computer, removed the video card, and reinstalled it. I do not have an image on the monitor. The desk top fires up all right, and the fan on the videocard works, but the videocard fails to send a signal to the monitor. Could somebody please tell me what might be going on here? I would hugely appreciate help from members of the forum.