BSOD Alienware m17x r4 Error code : 0x116

Hi,

It has been a while i'm trying to resolve this issue but still no solution.

My pc does BSOD while i am gaming,and only while gaming.

First i'll give you my specs :

Operating System

Windows 7 Home Premium 64-bit SP1
CPU
Intel Core i7 3630QM @ 2.40GHz 55 °C
Ivy Bridge 22nm Technology
RAM
16,0GB Dual-Channel DDR3 @ 798MHz (11-11-11-28)
Motherboard
Alienware M17xR4 (U3E1) 28 °C
Graphics
Generic PnP Monitor (1920x1080@60Hz)
Intel HD Graphics 4000 (Dell)
NVIDIA GeForce GTX 675M (Dell)
Storage
698GB DWW-DXE127CY3R5 (RAID)
Optical Drives
HL-DT-ST DVD+-RW GA31N
Audio
Sound Blaster Recon3Di

The description of the BSOD from whocrashed :

On Sun 8/02/2015 00:01:23 GMT your computer crashed
crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: nvkflt.sys (0xFFFFF88003160010)
Bugcheck code: 0x116 (0xFFFFFA801AB94010, 0xFFFFF88003160010, 0xFFFFFFFFC000009A, 0x4)
Error: VIDEO_TDR_ERROR
file path: C:\Windows\system32\drivers\nvkflt.sys
product: NVIDIA Windows Kernel Mode Driver, Version 327.45
company: NVIDIA Corporation
description: NVIDIA Windows Kernel Mode Driver, Version 327.45
Bug check description: This indicates that an attempt to reset the display driver and recover from a timeout failed.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: nvkflt.sys (NVIDIA Windows Kernel Mode Driver, Version 327.45 , NVIDIA Corporation).
Google query: NVIDIA Corporation VIDEO_TDR_ERROR

What i have done for trying to resolve this issue :
-format and clean install of windows 7 
-checked drivers of both intell and geforce (installed the dell ones, also the latest ones from the sites of intelle and geforce,also drivers that were recommended on forums for the same kind of issue)
-pre-boot diagnosys (no problem found)

-several diagnoses from dell or antivirus or other programs (no problems found)

-flash bios to newest version

-did a stresstest with furmark (geforce card reaches max 70degrees) (i must say i had BSODS of the same type while doing the stresstest)


So i'm a bit desperate now... i noticed that when i redo a driver install, i can game for a while (few days), than it starts crashing again.
My temporary solution is to deactivate the geforce card and game only with the Intell 4000 one.
the bsod only occurs while gaming, if i don't game, i can let the card activated and have never problems with it.

so i hope someone can help me here,i'm out of ideas.

Thanks in advance,
Sébastien