In order for you to play King's Bounty: Dark Side on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP (SP3 required), Vista, 7, 8
Processor (CPU):
2.6 GHz and better
Memory (RAM):
1 GB RAM
Graphics Card:
nVidia GeForce 6600 with 128 Mb VRAM or similar AMD card
DirectX:
Version 9.0c
Storage:
8 GB available space
Sound Card:
DirectX 9.0c compliant