I have a couple of computers, one of which is having some bizzare display problems. The computer not working had an integrated video card and upon bootup the monitor (a sony lcd) shows nothing but a black screen, the monitor also will not turn off at this point. So far this is a rather common problem, most likley the video card right? I bought a new ATI 9600 to replace the integrated card and proceeded to hook it back to the lcd with the same results. At this point I thought it could be the monitor so I tried hooking the computer to another display (a Mitsubishi crt)which worked. Then just to be sure I tried a third display (a Visiontek crt) which, oddly had the same problem as the Sony lcd. The Sony lcd no longer works with other computers while the Visiontek crt does. At this point I'm stumped and any suggestions would be greatly appreciated. I cant think of anything else to try.