Rock solid PC suddenly powering down

Hello.

I have an:

Intel 5930k
Asus X99s
16GB Ram
Geforce Titan X SLI
Windows 10

Literally not had any problems with it for over a year. Stable as anything. Was even fine this morning as I was playing DOOM for 2 hours.

Now my girlfriend was in it earlier doing some eBay selling and it rebooted to a black screen whilst she was using it. I thought it might be the camera she had connected via USB but I disconnected that and now its randomly restarting or powering down within 5-10 minutes of turning it on.

I had Hardware monitor on and all the temperatures looked normal.

Any ideas what could possibly happen within 6 hours to make it go bad? Is there an event log I can look at to see what could be causing the problem?

PSU is a Super flower Leadex Platinum 1200w and is only 18 months old, so should be more than capable of powering it.

Knocked my modest CPU overclock back to stock and just left it on the desktop and it's still powered down.

What on earth??

Temps ok? something (think AIO water cooler pump) hasnt just stopped working? thus temps increase over time and the system shuts down to be safe.

Have a look in Event Viewer to see if there's anything unusual. You'll undoubtedly have a bunch of Kernel 41 errors, which basically say the system has shut down unexpectedly, but you should also have some other errors logged. Even though it's not BSODing, something like whocrashed might give you some info.

Have you had any power cuts/surges recently? That could potentially have damaged something. If it's actually fully powering down and turning itself off rather than rebooting, then I would consider a hardware issue more likely than software.

Although the PSU is only 18 months old and is a decent model, it could have developed a fault - which is why I asked about power cuts etc.

stulid said:

Temps ok? something (think AIO water cooler pump) hasnt just stopped working? thus temps increase over time and the system shuts down to be safe.

Click to expand...

Yes, everything looks fine. CPU does't go above 60°C under load!

Borealis said:

Have you had any power cuts/surges recently? That could potentially have damaged something. If it's actually fully powering down and turning itself off rather than rebooting, then I would consider a hardware issue more likely than software.

Although the PSU is only 18 months old and is a decent model, it could have developed a fault - which is why I asked about power cuts etc.

Click to expand...

No power surges that I am aware of. I agree it seems to be hardware related and does look like the PSU could be the culprit.

Take a gfx card out, try each in turn.

Re: WhoCrashed

I am getting this error message when trying to start the program



Could this be related?

stulid said:

Take a gfx card out, try each in turn.

Click to expand...

Can I just pull the 8 and 6 pin plugs out to disable them? As the AIO's heatsink/fans are screwed on to the case I would prefer not to have to completely remove them.

Probably not, you might just get an error message saying connect the power to them.

Thought I would run it just on the BIOS screen for a bit and that powered down after about 20 minutes, so that's before windows or any drivers load up.

Strip it, clean it and start from the beginning.. examine it all (esp the usb ports) and rebuild out of the case with minimal components.

Yes it is a pain, but it is the only way to be sure.

Why would USB ports cause an issue?

VincentHanna said:

Why would USB ports cause an issue?

Click to expand...

It's the only thing we have to go on. We know your gf has been plugging a usb in, right?

Just worth inspecting that area when you strip it.

Test #1

Have pulled out Primary GPU, am using secondary GPU and I also pulled the USB 3.0 header from the mobo (as that links to the front USB ports my girlfriend was using)

Also sucked the dust away from the filter around the PSU, in case the PSU wasn't able to vent heat.

Shall see what happens.

Played DOOM for 20-25 minutes and thought it was cured but then that froze up.

PC didn't restart automatically this time though, just was stuck with my last moments of DOOM on the screen and Ctrl-alt-del did nothing.

So....it lasted longer but still froze up.

DOOM doesn't use SLI so in effect because I was using my secondary Titan X, I was using a different GPU (the primary GPU is used normally when no SLI profile we exists.), Which I think rules out either of the Titan X's.

Still thinking it's a power issue.

So how do I test a faulty PSU?

Don't really want to lay out £200 on a new one to find out that wasn't he problem in the first place.

Borrow a PSU from someone for a few hours? See if anyone on the "gum" site can help you out?

Sadly none of my friends are really in to PC's so I don't know anybody with one.

The only real way to test one is with a multimeter when it's under load.

Have you tried resetting the BIOS? pull the battery out?

Worth a shot.