Fiend not running on Windows 7

[CaralhoMassivo]

What seems to be the exact problem? Can you explain in detail?

It seems like the screen is stuck, or something like that. Then I alt+tab it, come back to find the next screen, but the problem persists.

I suppose this is a somewhat typical problem of (very) old games being run at newer systems, but Fiend is from 2001 so I really didn't think I'd come across this kind of issue.