My Cincinnati Arrow 1000 (Siemens Acramatic 2100 control, Windows NT 4.0 SP6) is not starting up. I power it on, and all seems well, it goes through the OS Loader, and I get the blue Windows NT screen, but when it comes to loading, I only get a black screen (or sometimes a red striped screen) and a little white blotch near the center right of the screen. I tried hooking up the hard drive to another computer and it booted perfectly, which leads me to believe that it is not the problem. Any help would be greatly appreciated. Thanks in advance.