Computer Powers Down suddenly... then turns back on again

[BionicMike]

My computer just turns off suddenly, without warning. A couple of seconds later, it turns back on automatically and nothing happens. 

Windows 10 64-bit

Intel Core i5-4690K (3.5ghz)

Noctua NH-D14 Cooler

8 GB Kingston HyperX Black RAM

Gigabyte Z97 Gaming 3 Motherboard (BIOS version F8)

Corsair AX860i Power Supply

WD Blue 1TB
Sandisk 240GB SSD

 

It crashes randomly. Sometimes I'll be browsing (with around 10-15 tabs) or I'll be word processing, sometimes gaming (Overwatch and CSGO) and it will shut down all of a sudden. 

 

No error messages occur, just a shutdown. No BSOD or anything of that sort. It shuts down.

Things I've tried:

- It's defintely not a wattage issue, 860W is more than capable of powering this.

- Drivers are 100% up to date, I double checked 

- Memtested RAM and it's fine so I'm sure RAM isn't the issue.

- Prime95 stress test for around 3-4 hours is fine too... it doesn't crash and is 100% stable

- Sometimes it won't happen for a long time, but when it does it just shuts down immediately and restarts. Kind of annoying because I'll be in the middle of playing something and it will shut down all of a sudden. 

[SLAYR]

Sounds like the overclock isn't stable, try turning it down/off, or upping the voltage.

[BionicMike]

1 minute ago, SLAYR said:

Sounds like the overclock isn't stable, try turning it down/off, or upping the voltage.

I haven't overclocked it at all. 3.5 GhZ is the base clock for this processor. 

[BennyGoodman]

Lose Ram? I had that issue, taking out my ram and putting it back in fixed it. does the screen flash on and off before it powered down?

[BionicMike]

1 minute ago, BennyGoodman said:

Lose Ram? I had that issue, taking out my ram and putting it back in fixed it. does the screen flash on and off before it powered down?

Nope, it just shuts down automatically. And then restarts without me touching anything and acts as normal.

[BennyGoodman]

Well, try the ram

[BionicMike]

So just remove it and reinsert it? Then restart the machine?

[EvilLemur]

Faulty powersupply, check all your connections and try with another one if you can.

[BionicMike]

On 9/26/2016 at 4:27 PM, EvilLemur said:

Faulty powersupply, check all your connections and try with another one if you can.

That may be the case but it's only been six months with the PSU.

I tried the RAM trick and no auto reboot over the last 24 hours so maybe it's fine now

 

[BionicMike]

So a couple of days later, this happened.

Below is a google drive link of the video so you can see what's happening.

It suddenly shuts off, then goes into a restart loop like that for around 2 minutes, then starts up normally.

Is this still a problem with the PSU?

https://drive.google.com/file/d/0B0Hk9MTQecnPMjRiWHR1blBOX1k/view?usp=sharing

[BionicMike]

Bumped, hopefully someone can answer this soon, my computer just will go into a restart loop erratically.

[Thx And Bye]

22 minutes ago, BionicMike said:

Bumped, hopefully someone can answer this soon, my computer just will go into a restart loop erratically.

Did you check the power supply connection and if yes tryed a different power supply already? Would try it, before you toast your system.

If you're getting a new one, look for SeaSonic or SuperFlower.

[BionicMike]

Just now, Thx And Bye said:

Did you check the power supply connection and if yes tryed a different power supply already? Would try it, before you toast your system.

If you're getting a new one, look for SeaSonic or SuperFlower.

It's an AX860i. 

I don't have a different PSU...

 

[Thx And Bye]

Just now, BionicMike said:

It's an AX860i. 

I don't have a different PSU...

 

If it turns out not to be a PSU failure, you can (depending of your county) simply send it back for a refund.
But its pretty likely a PSU problem if you can't even start the system.

 

Also if the PSU is only 6 month old, you could also RMA it.

[BionicMike]

2 minutes ago, Thx And Bye said:

If it turns out not to be a PSU failure, you can (depending of your county) simply send it back for a refund.
But its pretty likely a PSU problem if you can't even start the system.

 

Also if the PSU is only 6 month old, you could also RMA it.

Yeah, I might RMA it.

I can start the system, but a couple of minutes in, it will turn off, then go into that start, shut off, start, shut off...

Couple of minutes later it will POST and go into the desktop, but experience the same problems 5 minutes into starting up Windows.

 

So it's probably a PSU problem? 

[Thx And Bye]

4 minutes ago, BionicMike said:

So it's probably a PSU problem? 

If you are getting no BSOD I'd say its 90% the PSU.