I assume you mean "Silence of the Sleep"
http://store.steampowered.com/app/321870/Silence_of_the_Sleep/Make sure your computer meets the minimum requirements.
Minimum:
OS: Vista, 7 or 8
Processor: Dual Core 2.0 GHz
Memory: 4 GB RAM
Graphics: 1024 MB card capable of shader 3.0
DirectX: Version 9.0c
Storage: 1500 MB available space
Sound Card: DirectX 9c Compliant
Additional Notes: Widescreen monitor (16:9) that supports refresh rate of 60Hz and minimum resolution of 1280x720.
If you are using a laptop or onboard graphics, your graphics may not meet the requirement. "1024 MB card" probably means 1024mb of discrete memory -- not shared memory.
If your computer meets the game's system requirements, the problem might be with the version of video card drivers or with antivirus.