It's usually either that you need a different output optin in dosbox config or the nvidia driver messing things up. Some kind of setting inthe nvidia stuff

ajc138 wrote:

I've spent all afternoon searching this forum and the web for solutions and have not found any. I've tried modifying numerous options of the config file, disabling windows firewall, uninstalling & resintalling in a different location and turning off my AV software but nothing has worked - the blank screen comes up every time.

There have been numerous threads here describing this same problem, swiftly remedied by changing output=surface to output=opengl or output=openglnb. Is that something you tried?

Jorpho wrote:

There have been numerous threads here describing this same problem, swiftly remedied by changing output=surface to output=opengl or output=openglnb. Is that something you tried?

I had not tried that but thanks Jorpho, that did the trick!

... I am rather puzzled as to how you managed to "spend all afternoon searching this forum and the web for solutions" and "tried modifying numerous options of the config file" without coming across that. I hesitated even to suggest it.

Because for some reason I thought that setting dealt with the window that the game would be played in and not the actual dosbox window. So I got it stuck in my head that wouldn't affect anything so I didn't change it. Obviously a mistake.