Hope you've had some luck resolving your issue, If your screen is not displaying any information is surely is a problem with the internal PC.
I would first obviously check all the connections, if not its likely to be a failed/failing piece of hardware. First thing I would try is a different PC Monitor.
Then if you have access to any PC components I would try switching RAM its likely to be something like SDRAM due to the age of the machine.
I don't think it can be anything to do with the press but it could be any of the PC components.