Burning Smell Don't know if mobo or CPU is shot psu is fine

Ryan_343 · Jul 9, 2017

I was playing arma 3 on my new build awhile ago and smelt burning and shut everything off immediately, ever since then I get my mobo leds to turn on and the fans to rev for a split second and then they all die and it keeps doing it, trying to figure out what's gone to shit so I know what to fix thanks

Mobo ASUS z170i pro gaming
Cpu I5-6600k
Mem 2x4 balistix ddr4
Psu Corsair cx600

Ryan_343 · Jul 9, 2017

https://youtu.be/W3SvkV3cAvQ Link to video on what's happening

SchizTech · Jul 9, 2017

Well the top suspects here would be the PSU, Motherboard, or GPU. If the PSU burnt out, it could have taken out other parts or they may be fine (only way to be sure of that is to test).

As a preliminary, you might visually inspect the system carefully to look for burn marks.

Ryan_343 · Jul 9, 2017

Psu and gpu are out of the equation I have an extra mobo and processor I can test on and it boots up fine with that setup, but just can't narrow it down to the mobo or CPu, dude at geek squad said it was mobo

SchizTech · Jul 9, 2017

OK then. Well in general CPU failures are relatively uncommon but motherboards go much more frequently, so that would be my first guess. Are there any visible marks on the board?

Ryan_343 · Jul 9, 2017

Couldn't find any marks on the board looked on the bottom of it and the top side, the processor looks to be in good shape no burns or anything there that's why I'm thinking mobo just overheated and pooped

SchizTech · Jul 9, 2017

Well since this is a newish system you might check if the board is still under warranty, and contact ASUS.

tsnor · Jul 9, 2017

Burning smell is a part shorting.

"...I get my mobo leds to turn on and the fans to rev for a split second and then they all die " is the PSU shutting down on overcurrent protect or something related to the short.

Pull all wires from MB except for CPU fan and PSU. Remove video card and memory. Disconnect all power leads from PSU except the two cables to the MB. Power up. It should work and beep "no memory".

If above is good (beeping no memory) add parts back in until you get the "mobo leds to turn on and the fans to rev for a split second and then they all die ". then suspect the last part you added back in. Could be video. Could be memory, Could be hard drive, etc.

Ryan_343 · Jul 9, 2017

Went ahead and filed for a RMA, but also just did what you said and got my CPU fan on steady but my gpu fan is flickering on and off and I'm getting no picture from either gpu or on board graphics

Ryan_343 · Jul 9, 2017

AND my mobo doesn't beep?

Ryan_343 · Jul 9, 2017

Made 2 more videos
https://youtu.be/1EqpvY7ytKI With memory and CPU all good

https://youtu.be/-64n7aNcm4g Then I add the gpu and it starts to act up doing this weird flickering

And when ever I plug this in http://imgur.com/a/eBa51 my fans just decide to die and not work at all https://youtu.be/hdYsTyYNvbA looks like a spark or a red light flashing to the right of the fan

SchizTech · Jul 10, 2017

And when ever I plug this in http://imgur.com/a/eBa51 my fans just decide to die and not work at all https://youtu.be/hdYsTyYNvbA looks like a spark or a red light flashing to the right of the fan

That's the CPU power cable. The short might be in the power circuits feeding the CPU. Why not remove the CPU and see if the same result happens. With the CPU physically removed you'd expect the same result as with that cable out on a healthy board (since running without that cable in means the CPU isn't running).

Ryan_343 · Jul 10, 2017

So you do think it's the motherboard that's messed up huh

SchizTech · Jul 10, 2017

Ryan_343 :

Well it's still a good possibility but the test suggested could provide evidence either way. It'd be unusual for the CPU to just pop like that, though at high load those voltage regulators have a lot of current going through them.

Ryan_343 · Jul 10, 2017

SO test the mobo without the CPU inside and see if it acts differently or normal?

Ryan_343 · Jul 10, 2017

Kinda confused here, this was my first build and all (upgrade actually)

SchizTech · Jul 10, 2017

Ryan_343 :

It's an idea I had, yes; the system won't do anything useful without the CPU (no display, etc) but to see whether the fans behave normally. Nothing short of testing the CPU in a different board would verify it for certain though. On that note, you might look for a repair place willing to let you test that chip.

Burning Smell Don't know if mobo or CPU is shot psu is fine

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