ASUS power surges during gaming when nothing's changed

[SlammichTheSorcerer]

So, today I was playing an online game with some friends, when my computer just shut down and rebooted, with the bios telling me that a power surge's been detected. Immediately after restarting, I reconnected, and immediately crashed when the game loaded up.
Other games gave the same result, always immediate shutdown followed by power surge warning.

i've tried reseating my GPU, reinstalling all my drivers and such, then I could get in, play for a 10ish minutes when it happens again.
Then I find out my power strip's cable is being squished underneath my desk, so I switch it out for a different (albeit old one). This gave me about 35ish minutes of gametime before it happening again.

Thing is, literally nothing's changed this past month. First time it's ever acted up like this. No change in hardware, software etc. Nor have any of my components been overclocked.

Is my power supply failing or something?

My specs are:
MoBo: Asus M5A78L-M/USB3 Micro-ATX
CPU: AMD FX-8350
GPU: Nvidia gtx 970
PSU: Cooler Master G650M
Case: Cooler Master Silencio 352

Is my PSU or something dying on me?

 

[Supahos]

Probably the boards MOSFETs overheating from that CPU that board and the 83xx series chips aren't friends, try undervolting and perhaps under clocking the cpu and see if it helps

 

[SlammichTheSorcerer]

Probably the boards MOSFETs overheating from that CPU that board and the 83xx series chips aren't friends, try undervolting and perhaps under clocking the cpu and see if it helps

Can't be the MOSFETs. I've applied both heatsinks and gotten a downdraft CPU-cooler that properly cools them a few months ago, and it's been flawless until now. Also, wouldn't that show up earlier?

 

[SlammichTheSorcerer]

Small update: other threads suggest just turning off ASUS' power surge protection cause it's too iffy, the shutdowns still happen, albeit without the BIOS' power surge warning prompt.

 

[Supahos]

That is a tier 3 power supply as well. I still say try undervolting and under clocking to see if it fixes things. As I know a few people who have had issues with the power delivery system to 8350 chips on that Board

 

[Vic 40]

No problems using the pc with the integrated gpu?

 

[sizzling]

PSU's deteriorate over time, lower quality ones deteriorate faster. Could just be the signs of an aging PSU.

 

[Vic 40]

Was looking at the psu as well.Can't be that old,if it is the psu should it have warranty on it.It comes with a 5 year manufacturer warranty.

 

[SlammichTheSorcerer]

That is a tier 3 power supply as well. I still say try undervolting and under clocking to see if it fixes things. As I know a few people who have had issues with the power delivery system to 8350 chips on that Board

So, I've underclocked it to 3.5ghz, though left the voltage at auto since I'm not familiar with the BIOS at all, Didn't change anything. If I'd have to manually lower the voltage, how would I go about doing that then?

Was looking at the psu as well.Can't be that old,if it is the psu should it have warranty on it.It comes with a 5 year manufacturer warranty.

Should I contact Cooler Master and ask for a replacement or something? Provided it's actually the PSU's fault.

 

[Vic 40]

Should I contact Cooler Master and ask for a replacement or something? Provided it's actually the PSU's fault.

First try the store/site you bought it from.They have an obligation too for a certain period of time,depends probably where you live for how long.
If that period is over try Cooler Master support and make a ticket there.

Tried the onboard gpu? Just to see if the power draw of the gtx 970 makes a difference.I know it's not a good one,the onboard,but try it anyway.

You btw have the latest bios? =version 2101 from 2015/08/05