As the title says, I found what could be the cause of the Unexpected Error in my case. Still, after doing a bunch of research, I have yet to find the cause of this issue. Anyone got any ideas? Here's my specs currently:

Operating System: Windows*7 Édition Familiale Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_ldr.170307-1800)
Language: French (Regional Setting: French)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: BIOS Date: 10/08/12 11:20:02 Ver: 13.06
Processor: Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz (8 CPUs), ~3.5GHz
Memory: 16384MB RAM
Available OS Memory: 16338MB RAM
Page File: 7699MB used, 59740MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 64bit Unicode

And graphic card:

Card name: NVIDIA GeForce GTX 970
Manufacturer: NVIDIA
Chip type: GeForce GTX 970
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_13C2&SUBSYS_36841458&REV_A1
Display Memory: 3729 MB
Dedicated Memory: 4008 MB
Shared Memory: 3817 MB

I can post the full DxDiag thing if needed