Computer random shut downs

[Nando Juarez]

Hello,
I've recently had a problem with my existing gaming computer. From time to time, my computer (desktop) turns off on its own. If kept off for a while, the problem begins after hours of use and then shuts down at a faster rate.

At first, I thought it was a PSU failure, but after I switched PSU, the problem was still present. I then made sure that there wasn't a overheating problem and reapplied thermal paste onto the CPU (after cleaning it, of course). Yet, the problem still persists. I am not sure what to do anymore.
Please help.

Specs:
AMD FX-6300 6-core processor
Asus M5A97 LE R 2.0 motherboard
Zotec Nvidia GTX 750
16 Gb RAM (4x4)
WD 1Tb HDD (main)
WD 2Tb HDD (slave)
Cobra Power 600W
No overclocking

 

[Dark Lord of Tech]

Cobra Power? Is it Raidmax ? Still sounds like a PSU issue and your board has no heatsinks on the VRM , lots of issues possible on that setup.

 

[Nando Juarez]

Cobra Power? Is it Raidmax ? Still sounds like a PSU issue and your board has no heatsinks on the VRM , lots of issues possible on that setup.

Yes, Raidmax. I have been running this build with minor changes (like a gpu upgrade and the additional HDD) for about 6 years. Probably need to get a new PSU?

 

[Dark Lord of Tech]

Raidmax are horrible quality PSU's , but that board is also a lower tier model , no heatsinks on the VRM , they run warm and can be unstable.

 

[Nando Juarez]

Raidmax are horrible quality PSU's , but that board is also a lower tier model , no heatsinks on the VRM , they run warm and can be unstable.

So would I have to replace both the PSU and board? I don't have the best budget at the moment, so which would be preferable to replace?

 

[Dark Lord of Tech]

What other PSU did you try?

 

[Nando Juarez]

What other PSU did you try?

I tried a Kentek 850W PSU, however, when I tried this, my slave HDD seemed to have dissapeared from both the BIOS and device manager.

 

[Dark Lord of Tech]

Kentek are just as bad or worse than Raidmax.

 

[Nando Juarez]

Kentek are just as bad or worse than Raidmax.

Thanks. I'll buy a new PSU, but if the problem continues, I'll update the thread.

 

[Dark Lord of Tech]

Sounds good , you need a reliable power source for your setup.

 

[Nando Juarez]

Sounds good , you need a reliable power source for your setup.

Does an EVGA 500W PSU sound good?

 

[Dark Lord of Tech]

Much better choice , that will suffice.

 

[Nando Juarez]

Much better choice , that will suffice.

Thank you, again. I'll get it here within a week, so I'll pin one of your answers as a solution unless the problem continues.