Hello,
Could you please post your crash callstack and your dxdiag? If you are worried that your system is not meeting requirements, you can read recommended requirements from FAQ:
Desktop PC or Mac
Windows 7 64-bit or Mac OS X 10.9.2 or later
Quad-core Intel or AMD processor, 2.5 GHz or faster
NVIDIA GeForce 470 GTX or AMD Radeon 6870 HD series card or higher
8 GB RAM
Cheers!