Fried mobo

bL1nd3R · Nov 29, 2019

Can someone tell me what exaclty fried on my motherboard?
i plugged in a 9800GT to test it and it fried my mobo.

Komshija · Nov 29, 2019

GPU burning motherboard MOSFET? Hmm...
Did you perform a visual inspection of this GPU prior to inserting it into the motherboard? Any damaged golden pins; did you clean them with alcohol or at least baby wipes and then wipe them with clean dry cloth prior to inserting GPU into the motherboard? Any scratches on the back side? Did you properly (firmly) push GPU into its slot?

eidairaman1 · Nov 29, 2019

Pull the motherboard out and carefully inspect it.

delshay · Nov 29, 2019

Should have given the motherboard a good clean before you install the GPU.

Black Haru · Nov 29, 2019

A picture of the back would be helpful. From what is visible, some portion of the VRM burned out.

I would not recomend attempting a repair. Too much risk of destroying your CPU (if it isn't dead already).

bL1nd3R · Nov 29, 2019

My PC still works just fine, i m just curious what fried, when i plug the gpu into an older computer it won t even start. this makes no sense to me.
GPU was plugged in correctly when my mobo fried, idk what happend
this is the gpu

Bones · Nov 29, 2019

The GPU itself is defective - That's why.
Doesn't matter how it's plugged in, if it's bad it's bad.

Noted your board looks like an MSI.
Just because (If I understand correctly) it's still working now doesn't mean it will for much longer, the board is damaged and failure is imminent. When that happens it will probrably take the CPU at the very least with it - I've had one do just that (MSI board) and yes, the CPU was toast afterwards.

bL1nd3R · Nov 29, 2019

Well i don t really care about the cpu, if it works for 3 or 4 months it s perfect, i ll upgrade by then, mobo is asrock 970 pro3 r2. 0

Bones · Nov 29, 2019

I have to doubt with all that it's gonna last a week - I'm not kidding either. If it does that's great but......

Worst of it is the potential to actually damage even more than just the CPU - Can even short the PSU itself and make it a literal B-B-Q meaning your home is a tad at risk here.
You don't need that.

Grog6 · Nov 29, 2019

The mobo power there is to the CPU; it doesn't go to the PCI-e slot at all.

The PCI-e slot uses 12V and 3.3V power from the power supply directly.

IDK why your board blew up, but it was incidental to the GPU; maybe a static zap.

Hugis · Nov 29, 2019

That PSU looks suspect to me, is it a HPC-500-A or G12S ?, not he best and really old(7+ years ?) to be powering 100+w of GPU, could be wrong but my zalman refused to power on my 8800gt the other day ( i suspect it is the psu, but as others have said your CPU VRMS have taken a hit/spike, which could be user error/psu/component age?/other)

Bones · Nov 29, 2019

Grog6 said:
The mobo power there is to the CPU; it doesn't go to the PCI-e slot at all.

The PCI-e slot uses 12V and 3.3V power from the power supply directly.

IDK why your board blew up, but it was incidental to the GPU; maybe a static zap.

What really worries me is the PSU itself is involved, if that is damaged in some way it could well wipe the entire system out once it goes. True, those burnt components aren't hooked directly to the PSU but as you said the GPU is by means of the PCI-E slot and that's all it would take, not to mention if the card uses a 6/8 pin plug directly from the PSU too.

Either way, whatever damage the system suffered is already done and doesn't look too good from here.

bL1nd3R · Nov 29, 2019

PSU powers an fx 6300 and a gtx 1060, been doing that for years, it s not that weak

Bones · Nov 29, 2019

Not a question of how strong/weak the PSU is, it's if it has suffered any damage because of the defective GPU.
Chances are..... Probrably not but if it has you'll know it without any doubt about it once it goes.

Ask Mr. Scott sometime what a PSU can do when it pops.... He still has a nice "Spot" on his desktop as a reminder of it.

freeagent · Nov 30, 2019

Cold boots are usually the hardest. Looks like your psu didn't like your startup settings and your new gpu.

basco · Nov 30, 2019

is this a normal 8-pin-eps connector or am i seeing too many cables going in ?
to me looks like a 8-pin pci-e
sorry if i am wrong

Grog6 · Nov 30, 2019

That's one of the 6+2 cables; I think you're correct.
I've never seen a 6pin 12V eps connector.
It looks like the topmost pair are swapped.

That's one explanation for an explosion.

EDIT:
I think that's an optical illusion; it looks like there are two wires crimped in that pin.
The 4 yellow wires should be toward the clip, and pci-e is away from the clip; also, the shell has a different shape, just to prevent that.
I think I'm wrong there.

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Fried mobo

bL1nd3R

Komshija

eidairaman1

The Exiled Airman

delshay

Black Haru

bL1nd3R

Bones

bL1nd3R

Bones

Grog6

Hugis

Moderator

Bones

bL1nd3R

Bones

freeagent

Moderator

basco

Grog6

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