monitor says 'no signal detected' - help!?

my son knocked over the of hardrive tower of our PC -- the monitor went out and now I can't get it to work again. It keeps saying 'no signal detected'
I replaced the monitor and cord (we had anoher one on a different computer) and that one says the same thing.
Anything I can do to fix it ???
Thanks =)

Fluffy2011-08-11T19:38:35Z

Favorite Answer

There are a couple answers:

1. Make sure it is plugged into the right spot
2. Try another monitor
3. Open the PC case and see if everything is still connected properly.

Errrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr2011-08-11T19:39:36Z

Here is a good picture to help
http://compknowhow.com/forgebox/unplug.jpg

Richard2011-08-11T19:39:25Z

i think it knocked something loose