2 x i7 7800X (X299) died in a similar way ..

sithlord · 12 Dec 2017 at 01:25

I now have had 2 CPUs (i7 7800X Skylake-X) that have died in an identical way.

The first one died while waking from sleep in windows. This was in October.

Now I have had the replacement also die in a similar way, I woke it from windows while it was in S3 sleep and its also died.. it just turns on the fans and "00" is showing on the Debug LED.

When the first one died I changed both the CPU and motherboard.

No overclock, both on stock and default settings.

Now the replacement has died. What could be the problem ?

southernorth · 12 Dec 2017 at 01:30

sithlord said:
I now have had 2 CPUs (i7 7800X Skylake-X) that have died in an identical way.

The first one died while waking from sleep in windows. This was in October.

Now I have had the replacement also die in a similar way, I woke it from windows while it was in S3 sleep and its also died.. it just turns on the fans and "00" is showing on the Debug LED.

When the first one died I changed both the CPU and motherboard.

No overclock, both on stock and default settings.

Now the replacement has died. What could be the problem ?

What PSU do you have?

sithlord · 12 Dec 2017 at 01:50

southernorth said:
What PSU do you have?

Seasonic FOCUS+ Gold 650 watt.

2 Months old.

Rroff · 12 Dec 2017 at 03:39

Have you checked the socket or underside of CPU for scorching?

Freddie1980 · 12 Dec 2017 at 08:22

sithlord said:
I now have had 2 CPUs (i7 7800X Skylake-X) that have died in an identical way.

The first one died while waking from sleep in windows. This was in October.

Now I have had the replacement also die in a similar way, I woke it from windows while it was in S3 sleep and its also died.. it just turns on the fans and "00" is showing on the Debug LED.

When the first one died I changed both the CPU and motherboard.

No overclock, both on stock and default settings.

Now the replacement has died. What could be the problem ?

Purely speculation on my part but it sounds like a power delivery issue steeming from faulty vrms or chocks. If your CPU isn't being supplied with clean 12v of power that would significantly damage your hardware overtime.

Take a look at your motherboard and see if there are any damaged chocks around the CPU. It may also be the PSU but in that case your video card would be effected as well.

sithlord · 12 Dec 2017 at 12:52

Gonna check for scorch/burn marks.

Although its new, do you think I should RMA the power supply ?

Its the only common thing left in the system.

I'm getting nervous and don't want a 3rd CPU to die.

Yaayuh! · 12 Dec 2017 at 13:45

The CPU should be protected from your PSU wanting to fry it. Which leads me to suspect the motherboard.

As said, check for scorch marks and check to see if it's a known issue with your motherboard. Could be the motherboard is supplying too much to the CPU on wake and frying it for example.

I would be looking to replace the motherboard and PSU whilst you wait for the RMA if i'm honest.

sithlord · 12 Dec 2017 at 13:55

I already replaced the motherboard once, the replacement has done the same thing.

GinG · 12 Dec 2017 at 14:38

Is the motherboard correctly positioned on standoffs to the case? No chance of anything shorting?

sithlord · 12 Dec 2017 at 15:11

GinG said:
Is the motherboard correctly positioned on standoffs to the case? No chance of anything shorting?

Yes correctly installed. Never crashed once, very stable.

8 Pack · 12 Dec 2017 at 18:26

What actual board is it?? What memory etc etc??

sithlord · 12 Dec 2017 at 19:05

8 Pack said:
What actual board is it?? What memory etc etc??

CPU: i7 7800X
Motherboard: MSI X299 SLI PLUS
PSU: Seasonic FOCUS+ Gold 650 watt.
RAM: Vengeance DDR4 LPX 3000Mhz.

Currently showing EZDEBUG white LED on CPU. No post.

CPU looks OK?:

JoshR1989 · 12 Dec 2017 at 20:18

That a scorch mark top left?
Josh.

8 Pack · 12 Dec 2017 at 22:06

Do you have liquid metal on the bottom of the cpu?? Seems a lot of silver.

Are you setting sa and io manually if not what volts is the board pushing??

sithlord · 12 Dec 2017 at 23:30

Do you mean this ?

It could be a scorch mark. I dont think its TIM.

I didnt set the CPU SA or IO, they were at default value.

The CPU is dead and I dont have a spare to test the board with,

southernorth · 12 Dec 2017 at 23:36

In the video below, there is some mention that the gold pads develop small black contact spots after use, but not quite like in your picture:

@7.20 onwards

jigger · 13 Dec 2017 at 00:53

sithlord said:
CPU: i7 7800X
Motherboard: MSI X299 SLI PLUS
PSU: Seasonic FOCUS+ Gold 650 watt.
RAM: Vengeance DDR4 LPX 3000Mhz.

Currently showing EZDEBUG white LED on CPU. No post.

CPU looks OK?:

Seems like a lot of exposed gold. Not sure if it the picture but it looks like a manufacturing problem.

sithlord · 13 Dec 2017 at 00:58

If your talking about the bottom right, that just the reflection from the camera and the lighting system. Theres no exposed gold.

Thekwango · 13 Dec 2017 at 01:01

sithlord said:
Do you mean this ?

It could be a scorch mark. I dont think its TIM.

I didnt set the CPU SA or IO, they were at default value.

The CPU is dead and I dont have a spare to test the board with,

there's a couple more of them going by the picture, although not as clear/large. that's definitely not right. Is there any corresponding marks on the socket?

JoshR1989 · 13 Dec 2017 at 17:37

sithlord said:
Do you mean this ?

It could be a scorch mark. I dont think its TIM.

I didnt set the CPU SA or IO, they were at default value.

The CPU is dead and I dont have a spare to test the board with,

That is what I was referencing, it's hard to tell without looking at it in person but it definitely shouldn't be there.
Josh.