Ok I recived a 7100 from a freind a while back which was sitting on a shelf in my office for a while. Recently I grabbed a Mac-to-PC monitor adapter (DM15-HF10P) of the net to use on my powermac. So today I recived the adapter in the mail & hooked it up. After fooling around a bit I used the 16" monitor setting. Everytime I open a window or two the screen goes blank then redraws the desktop. Then it has a sytem error type 10. WTF? The specs are below:

17 inch monitor
Powermac 7100
500 meg HD
40 Megs of Ram
NuBus Vidio card
Sony CD-Rom 6X

Thanks