Computer hard shutting down while playing games

[Empurefine]

Hi there I've been having a problem with my computer the last few days when playing black ops 2 my computer is just hard shutting down with no error codes or nothing I've tried removing all nvidia drivers and removing everything nvidia with driver sweeper, now it's making me think its maybe not the gfx card, it's brand new msi 660 ti power edition, can any1 on here give me any idea what I can be, all my temps are fine.

 

[Empurefine]

OPERATING SYSTEM
Name: Microsoft Windows 7 Ultimate
Architecture: 64-bit
DirectX version: 9.0c or better
MEMORY
Total memory: 8 GB
HARD DRIVES
C:
- Free space: 173 GB
- Total space: 500 GB
PROCESSORS
- Name: Intel(R) Core(TM) i5 CPU 661 @ 3.33GHz
- Manufacturer: GenuineIntel
- Description: Intel64 Family 6 Model 37 Stepping 2
- Number of cores: 2
VIDEO CONTROLLERS
- Name: NVIDIA GeForce GTX 660 Ti
- Adapter compatibility: NVIDIA

 

[daswilhelm]

what power supply?

 

[Empurefine]

Powercool pentium p4 750w

 

[Sunius]

I'm wondering about the power supply unit as well. Did you connect both PCI express power connectors?

 

[Empurefine]

Yeah both are in

 

[daswilhelm]

how old is that power supply?

 

[Empurefine]

Year maybe year nd a half

 

[Sunius]

Can you confirm it doesn't happen without the new GTX 660 Ti?

 

[Empurefine]

I'll try that tomorrow, going away to work ATM

 

[Empurefine]

I can't even get black ops to run now, keep getting this program has stopped working..


Problem signature:
Problem Event Name: APPCRASH
Application Name: t6sp.exe
Application Version: 1.0.0.1
Application Timestamp: 509a7621
Fault Module Name: XAudio2_7.dll
Fault Module Version: 9.29.1962.0
Fault Module Timestamp: 4c0641e5
Exception Code: c0000005
Exception Offset: 0002526c
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 2057
Additional Information 1: 4bc9
Additional Information 2: 4bc95bc08c80253552a5c9f5e69006f7
Additional Information 3: 7736
Additional Information 4: 77363e9c4fcc0db54525b3b0c99efd5e

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[Sunius]

Gonna wait for results without GTX 660 Ti.

 

[Empurefine]

Ok thanks