Shutting down, PSU voltage problem?

Hello, I've been having problems recently with my computer: When I'm playing a video game the system shuts down without warning and only ever so often a BSOD occurs. It used to be restricted to Civ V but now it happens with Diablo III and LoL as well. I ran Ccleaner and there are no registry errors or missed updates. Temperatures appear to be normal as well (though the GPU keeps around 51 Celsius on idle even in a 20 degrees environment)

after browsing through the forums a bit I suspect the problem could be my Advance TX-750W PSU. Running Speccy and HDMonitor shows no voltages out of the ordinary save for the -12V, which stays around -8 when idle. Could that be the problem? I could try another PSU but I don't have one ready, nor does do I have friends who could spare one easily, and I'm on a tight budget without income this summer.

I'll post specs and a Dxdaig below. I'm running a custom system (the first I ever built myself) but I admit I'm far from being any good at computer tech.

-Advance - mid tower - no PSU - NeoXblade - 8813B - Black

-MS Windows 7 Home Premium 64-bit SP1

-AMD Phenom II X2 550

-4,00 GB Dual-Channel DDR3 @ 669MHz (9-9-9-24) (says speccy, the ram I bought was sold as .SKILL - ECO Series - DDR3-1333 / PC3-10666 - 4 GB (2x2048MB) - 7-7-7-21 - F3-10666CL7D-4GBECO)

-Gigabyte Technology Co., Ltd. GA-790XT-USB3 (Socket M2)

-ATI Radeon HD 5700 Series (ATI AIB)

-313GB Hitachi Hitachi HDS721032CLA362 ATA Device (SATA)

-Advance TX-750W (store page where I bought it)

HwMonitor meaurement:
speccy snapshot voltage:
3 answers Last reply
More about shutting down voltage problem
  1. well the -12v used to be used in differential signalling for error correction of the transmitted data. I don't beleive its used on any current motherbd.
  2. That PSU is garbage. It should not ever touch a PC component and a plug at the same time
  3. Pinhedd said:
    That PSU is garbage. It should not ever touch a PC component and a plug at the same time

    It actually worked fine without any problems whatsoever for 2 years. Only recently Ive been having this issues, and I still think it's caused by damage from dust.
    Granted I had to sent back the first one I received because it didn't all, in any way.
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