Computer restarts while gaming

[videogamwz]

So whenever I game my computer restarts itself while I'm gaming. My first thought was overheating but I've monitored my temps at it still restarts at low temps around 40C for both my gpu and cpu. So I checked the inside while it was running and saw that my second GPU fan had stopped moving. I played around with the fan settings in Sapphire Trixx and discovered the second fan will spin by itself at 80%+. Even with it set to custom with 80% at 40C and it will still restart. During this time I checked my bios and saw that AI tweaker was on manual so i changed it to D.O.C.P and it still restarts.

The gaming session is usually 30 mins to maybe a couple of hours until it restarts it's kinda random but when it does restart when I load the same game I was playing, or even another, as soon as it pops up it restarts the only game I haven't seen restart is League of Legends. The desktop will not restart while I am browsing and the AI suite sensor doesn't display/or record the voltage drops around the time of the restart.

It even gave me some random volt droppings recently while it was idle:
+VDDA 1.656 Abnormal
+VDDA 2.508 Normal
+5V 0.000 Abnormal
+5V 5.035 Normal
+3.3V 5.616 Abnormal
+3.3V 3.288 Normal
But my desktop did not restart. It's also the first time I've seen these warnings,they rarely appear.

Specs:
OS: Windows 7 Home Premium 64
CPU: AMD FX-8350
RAM: G.SKILL Ripjaws X Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) F3-12800CL9D-4GBXL
Motherboard: M5A99FX PRO R2.0 (Socket 942)
GPU: SAPPHIRE 100363VXSR Radeon R9 280X 3GB 384-Bit GDDR5 PCI Express 3.0 x16
Graphics Driver Ver: Catalyst Version: 14.12 AMD Catalyst Omega Software
PSU: Corsair HX 850

*The RAM and CPU are not overclocked. GPU is overclocked but at factory OC settings. Also when I first made the desktop I kept fan % on automatic and both fans would spin <80% when the second fan stopped spinning I don't know I discovered it when my desktop started to restart in the middle of a gaming session.

 

[terry4536]

For a system to restart in that manner, it suggest two possibilities. The first is that the power supply is thermally resetting (either the PSU fan is clogged with dust or faulty). And the second one is that the power supply is detecting a short.

The other possibilities are all involve a reboot not a restart For example, a Widows error that results in a reboot.

 

[videogamwz]

For a system to restart in that manner, it suggest two possibilities. The first is that the power supply is thermally resetting (either the PSU fan is clogged with dust or faulty). And the second one is that the power supply is detecting a short.

The other possibilities are all involve a reboot not a restart For example, a Widows error that results in a reboot.

Ok if it is the PSU getting hot. How should I clean it without moving the wires everywhere and taking it out? Through the back ventilation or through the bottom fan? and should I stick the nose, the straw, of the air duster inside or blow at the surface. Also what about my stopped fan spinning at 80%+ fans peed kinda wondering how that happened when it was working fine on automatic and now i need to put it on custom for it to spin. Is there a way I can make it spin at 50%+ fan speed.

 

[terry4536]

Take the side off the computer and use some Dust-off (or similar) to blow the dust out of the system fans & heat sink. I would avoid a compressor air hose. Water accumulates in the tank of a compressor (from the humidity) and can damage electronics. I leave the system on, and it makes a bit of a mess on the floor, but it does a better job of removing the dust.

Depending upon the model there may be a switch on the power supply to turn off the low noise option. Seasonic (for example) has a switch on the interior side of the PSU to turn off the low noise feature.

 

[videogamwz]

Take the side off the computer and use some Dust-off (or similar) to blow the dust out of the system fans & heat sink. I would avoid a compressor air hose. Water accumulates in the tank of a compressor (from the humidity) and can damage electronics. I leave the system on, and it makes a bit of a mess on the floor, but it does a better job of removing the dust.

Depending upon the model there may be a switch on the power supply to turn off the low noise option. Seasonic (for example) has a switch on the interior side of the PSU to turn off the low noise feature.

I don't have a switch like that it's all automatic. I found a video on how to clean the psu so I think I should be ok on knowing how to clean it. https://www.youtube.com/watch?v=XBZhc4Kuvao

 

[terry4536]

The switch I was referring to is usually only on the better models. I know the Seasonic Gold and Platinum power supplies include this switch (and I've seen it on other brands as well).

 

[videogamwz]

The switch I was referring to is usually only on the better models. I know the Seasonic Gold and Platinum power supplies include this switch (and I've seen it on other brands as well).

http://www.corsair.com/en-us/hx-series-hx850-power-supply-850-watt-80-plus-gold-certified-modular-psu
That's what I have and I don't see any switch. Plus it's their selling point with the whole spin at whatever degree so I'm guessing they didn't add one.

 

[terry4536]

It isn't by any means a universal feature. You can't get quieter than no fan noise at all (assuming that you have no coil whine on the power supply). i have an 860 Watt Seasonic Platinum power supply,and (that to this day ) I have never noticed that the power supply is even on (noise wise). I am a big fan of that power supply.