Motherboard burned... Replaced, PC still doesn't start.

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Yero

Yero

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Apr 15, 2013
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Hello!

After a long discussions here on the forum, I built a new editing pc. Everything was fine until yesterday my computer turned off and then I smelled like something burned.

I opened my case and tried to start it again, it wouldn't start. Then I unplugged 24 pin connected from mother board and connected it again. This part shown in picture 1 over cpu (north bridge?) sparked and smoke started coming out of it. I turned it off and bought a new motherboard today.
http://img6.imageshack.us/img6/7596/2izt.jpg


The burned mother board was asrock x79 extreme 9
The new mother boards is Asus x79 sabertooth
the rest of parts listed below

Now that sabertooth is in and everything connected, pc still won't start. The power supply would click, then fans would start spinning and a red light on a motherboard lights up. Everything will go on for about 2 seconds and then turns off. Then it will do the same thing in a circle turn on, off, on off... this red light appears when it is trying to turn on. By that light super small letters say CPU.
http://img39.imageshack.us/img39/4295/ubuq.jpg

Does that mean previous motherboard burned my CPU? Or is something connected wrong?

i7-3930k
Corsair H100i
Mushkin Blackline 16GB (4 x 4GB) DDR3-2133
2x Samsung 840 EVO 250GB 2.5" SSD in raid 0
Asus GeForce GTX 770 2GB
Corsair 850W ATX12V / EPS12V
Windows 8 OEM 64bit

PS: I know for sure both SSDs work because I connected them to my friends tower to recover a file. I had very small experience with RAID, but I was able to make it run and it loaded windows, everything was fine. Hopefully only motherboard got damaged. At least that is what I am hoping for...
 
Solution
ingtar33
ok.

probably should have come to here first... but with luck nothing else was damaged. you see, when something blows up on a motherboard several things can happen.

1) you can kill the cpu
2) your psu might be dead (if it caused the fire in the first place it WILL be dead)
3) you kill your gpu

I hate to be the barer of terrible news, but it sounds like when the motherboard went it took more with it. Lets start out checking the gpu. unplug your gpu and try with just the onboard graphics. see if it will start then. if it won't then try another psu as well (keep the gpu out till you find something that starts the computer).

If the other psu, and a no gpu does the job for you, i think we'll have to replace the cpu... the...
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ingtar33

ingtar33

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Dec 17, 2012
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ok.

probably should have come to here first... but with luck nothing else was damaged. you see, when something blows up on a motherboard several things can happen.

1) you can kill the cpu
2) your psu might be dead (if it caused the fire in the first place it WILL be dead)
3) you kill your gpu

I hate to be the barer of terrible news, but it sounds like when the motherboard went it took more with it. Lets start out checking the gpu. unplug your gpu and try with just the onboard graphics. see if it will start then. if it won't then try another psu as well (keep the gpu out till you find something that starts the computer).

If the other psu, and a no gpu does the job for you, i think we'll have to replace the cpu... the problem is the place where your motherboard cooked off is a VRM/Mosfet. when those let lose they tend to kill the cpu... and if you're lucky they'll stop there... i'm that asrock board didn't kill anything else when it went... but it looks like it did.
 
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Yero

Yero

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Apr 15, 2013
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Thanks for you reply. Very appreciated.

I did what you said.
New motherboard doesnt have an on board vga so i took a $40 video card that i had to plug in my monitor before i got gtx 770. Also took another gworking power supply but the only thing I connected tbe hard drives with a canle from original tower. It has two ssds and one mechanical drive. Same on off process happened and smoke came from mechanical hard drive.

Is it possible that that wire was damaged and it messed up the hard drive. Or is it cpu ot h100i that mess up the rest of components?

I have one more 3930 k with a cooler on anoter tower. Should I put it and try it?
 
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Yero

Yero

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Here is what I just did. I took my processor and just installed it in another system. It worked. In bios it showed info and temperature. So cpu is fine.
 
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Yero

Yero

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It seems like everything is working. Obviously mother board burned. I doubt it power supply is bad. Altho there was an incident with mechanical hard drive.

CPU - works
RAM - works
VGA - works

Yet when I put everything back to my case, it doesn't worm. There is minimal stuff connected, accept I put gtx 770 for monitor since there is no vga on motherboard and i know it works.

Is it possible that watercooling kit burned out as well and mobo figures processor is getting to hot too quick and shuts system down?

What could it be?
 
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ingtar33

ingtar33

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Dec 17, 2012
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mmm... i'm pretty sure your corsair lights up... if it's not lighting up then yeah... it could be toasted too. i have one that wasn't working because of a loose wire... and the system would run long enough to get into the bios before the cpu temp got too hot...

if you have a mechanical drive smoking i'd say it's a far bet it's cooked too.

That's 2 parts that died with that asrock. and they're separated enough to make me think your psu is the cause for the system to die. Replace the psu. toss out that hard drive. corsair will replace the h100i, they have a lifetime warranty on those... the problem should be fixed.
 
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Yero

Yero

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Apr 15, 2013
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I bought a th750m psu today. Just installed it and same thing. Corsair lights up, but same as red cpu led it is only on for like 1 second, then turns off, turns back on in a couple seconds and so on. Same old story.

Is it possible that those parts that worked on another build were cooked but still showing details and degree in bios? I havent really got past bios or uefi..
 
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ingtar33

ingtar33

Glorious
Dec 17, 2012
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depends on the point you're in your post. i found my h100 won't light up until the PC starts to POST. if your system isn't posting it probably won't light up at all.

ok... so to summerize...

1) you've replaced the psu (sorry i was so insistent on that... it's just even if the psu is still good, whenever i have a massive hardware failure like you did, i assume the psu played a roll and replace it anyway... bad psus can keep coming back to burn you, and they are a legit firehazard so that wasn't just a figure of speach).
2) you've replaced the motherboard
3) you've tested the GPU
4) you've tested the ram
5) you're no longer using the cooked hard drive
6) cpu works and is tested

? on the corsair h100i

try another cpu cooler for a minute and see if your system will start. use the stock intel cooler if you have to, just try something else first.
 
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