In order for you to play PC Building Simulator on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows 7 or higher
Processor (CPU):
Intel Core i5-2500K or AMD Athlon X4 740 (or equivalent)
Memory (RAM):
4 GB RAM
Graphics Card:
GeForce GTX 660 (2048 MB) or Radeon R9 285 (2048 MB) - Integrated GPUs may work but are not supported.
DirectX:
Version 9.0c
Storage:
30 GB available space
Sound Card:
DirectX compatible