My computer's operating system is windows 11. I wonder if that's why the game doesn't work properly. either it doesn't work at all. or the graphics work better. the characters are not visible. some parts are faint. can you help me. thanks. :D

MM6 ve MM8 it's working fine.

Can't help you myself (don't own it or have Win 11) but you might find something useful in the subforum:
https://www.gog.com/forum/might_and_magic_series#1749775914

hmm , Day of the Destroyer kinda messes with windows 11 for me. 1st time it did not launch. It did mess with scaling options for my 4k screen. 2d time, after it messed up the scaling font it would start. i thought this was your problem. Then i read about your graphics situation and tried to start again, which was not even possible from galaxy. After restarting Galaxy a couple of times and running into similar results i tried startingthe game from the game directory which worked fine.

gave it a couple of seconds and did not notice any graphical inconsistencies.

Conclusion: My windows 11 does not seem to be a problem for running this game

added enlarged image for reference

i have 2k monitor :D

ty Sachys im looking forum.

I'm sorry, it was my fault. I have modded and normal mm7 on 2 separate hdd's, like 8 :( i mixed them up. :( everything works fine. :D