It seems you're unsure whether the problem is caused by software or hardware . There is something you can do to clear it up. Download ASTRA for DOS and run it in native DOS mode. Go to Information... (Alt+I) > Monitor info. On a good system, where the data channel between the system and the monitor is functioning, you should get a full listing of the monitor's capabilities as well as supported display modes (e.g. 1024x768 @ 100Hz): If it works, the problem is with software. That is, something is wrong with your Windows files, drivers or settings, and reinstalling it may help. If, however, ASTRA complains or fails to retrieve the information, then the problem lies in hardware, and you may want to start swapping components to further isolate it.
