King's Bounty Dark Side crashes whenever I wan't to create a new class

[GZL999]

Yeah so, im pretty mad. I have KB: DS but when I simply wan't to create an orc, demoness or vampire it just crashes and gives me no log. I was able to play as a demoness for around... 5 minutes before a volcano casted fireball and my game screen got distorted and these random colours appeared and the battle arena went to the corner and the troops went like black. Now I simply can't play the game. It crashes as soon as the loading screen is done when I select to create a new character. Please help me I rly wanna play the game.

Thanks