I hear you. I've been trying to get ahold of tech support at Wells Gardner for two weeks. They never return calls anymore, and emailing them is like sending an email to their trash can.
If all your friend did was bump the monitor, check and recheck all of your video connections, for both the monitor and the PC.
These monitors are pretty tough, and a simple bump like that shouldn't cause the problems you're experiencing. Check your VGA connection in the back of the monitor; unplug it, and plug it back in. Systematicly check all of your connections to make sure something isn't just a little bit loose.
By the way, the clicking noise you hear in the monitor is normal for a D9200. Mine does it to.
- Dan