**System Information**
Windows 7 64 bit
Core i7 3770K Non-overclocked
Nvidia GTX 780 DCU2 OC by Asus 3GB+ GDDR5
8GB of DDR3
**Blender Version**
Broken: 2.75/2.75a
**Short description of error**
Constant crashes on render view mode and rendering.
**Exact steps for others to reproduce the error**
Create a semi-complex scene, apply materials and textures(medium sizes), and hit render.
I used to create and render scenes that are more complex, and without crashes. Now, it crashes every little bit, and sometimes it even gave me bluescreen, or crash me to bios. I lost some of my project completely! If I continue doing render and crash, my computer will die!