Turned on new pc and poof!

[Worldofsockets]

So, need a little help. Just built a brand new computer from microcenter. I built around 30+ computers over the years, so routine builds are simple. If there is anything advanced, just please ask and I can try to do it for troubleshooting.

it’s a 7900x3d, 4080, 32gb ram in expo mode. A 990pro nvme, and a taichi motherboard with the latest bios.

I turned on the computer a few hours ago and it oddly turned off right away and you could smell smoke. I checked everything by a simple “eye” check and tried to smell where the issue was and for some strange reason the smell came underneath the 990pro. I’m not sure 100% sure but pretty damn certain. However, as a precaution ordered another psu, as typically that’s always the fault.

Do you know the likelihood of other parts being damaged? I’ve never had a motherboard issue like this before, so now I’m worried the ssd+cpu+gpu+motherboard could all be suspect. Is there any way to test without the usual part swap routine? Just looking for some ideas. This is in its second week of running, so not sure if it’s a bad motherboard, can microcenter replace it or do you have to through the manufacturer?

Thanks in advance!

 

[ty_ger]

If you used cable extensions, adapters, or cables which didn't come with the PSU, that could be the cause.

 

[Deleted member 237269]

So, need a little help. Just built a brand new computer from microcenter. I built around 30+ computers over the years, so routine builds are simple. If there is anything advanced, just please ask and I can try to do it for troubleshooting.

it’s a 7900x3d, 4080, 32gb ram in expo mode. A 990pro nvme, and a taichi motherboard with the latest bios.

I turned on the computer a few hours ago and it oddly turned off right away and you could smell smoke. I checked everything by a simple “eye” check and tried to smell where the issue was and for some strange reason the smell came underneath the 990pro. I’m not sure 100% sure but pretty damn certain. However, as a precaution ordered another psu, as typically that’s always the fault.

Do you know the likelihood of other parts being damaged? I’ve never had a motherboard issue like this before, so now I’m worried the ssd+cpu+gpu+motherboard could all be suspect. Is there any way to test without the usual part swap routine? Just looking for some ideas. This is in its second week of running, so not sure if it’s a bad motherboard, can microcenter replace it or do you have to through the manufacturer?

Thanks in advance!

PSU model ? Could you post pictures of the case, motherboard, cable management behind etc.
Are you on 230 or 115v outlet

 

[Worldofsockets]

If you used cable extensions, adapters, or cables which didn't come with the PSU, that could be the cause.

I am using two lian li cables, without the rgb plugged in. One is for the 24pin mobo, and the other is going to the gpu. I’m also using the inland white cable extenders from microcenter, well the two 8 pin for the cpu. If it was those cables, any way to determine or test? I’m guessing the motherboard at a minimum is blown? I’m worried about the other stuff as well

PSU model ? Could you post pictures of the case, motherboard, cable management behind etc.
Are you on 230 or 115v outlet

It’s a sea sonic platinum - https://seasonic.com/focus-plus-platinum

I’ll post pictures tomorrow, as I had to go to the bar and get away from the frustration.

Well stupid me I forgot to add something which blanked. I swapped Lian li fans and the hub. I went from AL to SL. I didn’t test it after I swapped the hub and fans, but could a hub cause this?

 

[95Viper]

for some strange reason the smell came underneath the 990pro.

Did you use stand offs?
Did you check their placement?

 

[R-T-B]

Have you checked the CPU itself? Early bioses were known to have a potential to burn up AM5 CPUs. If this happened, it should be warrantied by AMD.

The typical damage sign is a bulge and/or burnt area on the bottom of the LGA "pins" on the CPU.

 

[delshay]

@OP

When taking photos check the back of the motherboard also as you may have burnt some traces. So yeah, it looks like you have to take the whole system apart. ...& check with some-kind of magnification as well as your nose as some fault(s) are not easy to spot.

 

[Worldofsockets]

Did you use stand offs?
Did you check their placement?

Yep, typical placement.

Have you checked the CPU itself? Early bioses were known to have a potential to burn up AM5 CPUs. If this happened, it should be warrantied by AMD.

The typical damage sign is a bulge and/or burnt area on the bottom of the LGA "pins" on the CPU.

No visual signs that I can see.

@OP

When taking photos check the back of the motherboard also as you may have burnt some traces. So yeah, it looks like you have to take the whole system apart. ...& check with some-kind of magnification as well as your nose as some fault(s) are not easy to spot.

This is the spot. I haven’t the heart to undo it all just yet, as I’m still pretty upset over the entire thing. Any ideas as to what that chip is doing? Seems like a really strange spot if you ask me.

 

[Ferrum Master]

Fill out your specs. Precise models. There are a lot of Taichis around.

Mod should point out that first before the guessing game starts.

 

[Worldofsockets]

Fill out your specs. Precise models. There are a lot of Taichis around.

Mod should point out that first before the guessing game starts.

Sorry, it’s https://www.asrock.com/MB/AMD/B650E Taichi/index.asp

 

[ty_ger]

It looks like the power stages for the NVME drive or USB ports burned up. Hard to tell for sure what it is for, but that seems to be the general area.

I wonder if something was plugged in crooked or shorted. For example, I have seen a tab for the IO shield on the back of the case pushed into a USB port and short it out. I wonder if you can find an assembly problem, or if it is just bad luck that a faulty component burnt up.

 

[Worldofsockets]

It looks like the power stages for the NVME drive or USB ports burned up. Hard to tell for sure what it is for, but that seems to be the general area.

I wonder if something was plugged in crooked or shorted. For example, I have seen a tab for the IO shield on the back of the case pushed into a USB port and short it out. I wonder if you can find an assembly problem, or if it is just bad luck that a faulty component burnt up.

The only thing i modified, which didn’t come to me as it didn’t seem like much was a lian li, fan hub. Those don’t typically cause problems, do they? I switched from an al to sl as I moved to the sl fan models.

 

[Ferrum Master]

Fill out your specs. Precise models. There are a lot of Taichis around.

Mod should point out that first before the guessing game starts.

Tell the ASMEDIA chip name... googling around does not give proper images. All Motherboard reviewers are turned into f* artists nor they mention proper IC lineup.

 

[redeye]

oh no! the magic smoke!

 

[KedsDead]

Well.. Since you got it from Microcenter, they have a 30day no questions asked warrantee.. take it back, tell it did work when you turned it on. They will give you another, if they dont have that one, they will either order it or give you credit toward another motherboard.

 

[Ferrum Master]

Well.. Since you got it from Microcenter, they have a 30day no questions asked warrantee.. take it back, tell it did work when you turned it on. They will give you another, if they dont have that one, they will either order it or give you credit toward another motherboard.

Well yeah... but it would be fine to understand what went wrong to not to cause mass murder and turn the PC case into a cemetery.

 

[KedsDead]

True. But that chip is so far down the power rails, in terms of from where it starts to how it gets there, there would other parts fried as well is there was an external issue. Other than a bad soldier job.

 

[neatfeatguy]

Well.. Since you got it from Microcenter, they have a 30day no questions asked warrantee.. take it back, tell it did work when you turned it on. They will give you another, if they dont have that one, they will either order it or give you credit toward another motherboard.

I had a MB that was DOA from Micro Center. The guy working behind the customer service counter looked at me like I was a damn fool as if no MB has ever been DOA before, but they took it back and I got a different MB that worked like it should. I do like me some Micro Center, except their inventory counts tend to be off when they get down to the last 1-2 quantity for items.

 

[KedsDead]

I have hooked up a cheap fan hub and it blew the second I turned it on. I looked over everything at the time, but it was fine when I tried again, with the hub.

I had a MB that was DOA from Micro Center. The guy working behind the customer service counter looked at me like I was a damn fool as if no MB has ever been DOA before, but they took it back and I got a different MB that worked like it should. I do like me some Micro Center, except their inventory counts tend to be off when they get down to the last 1-2 quantity for items.

The Micro Center here told me the counts are done like once a week here. Since they dont really do shipping orders the website and inventory isnt as up to date.

 

[Ferrum Master]

True. But that chip is so far down the power rails, in terms of from where it starts to how it gets there, there would other parts fried as well is there was an external issue. Other than a bad soldier job.

It ain't that far. I suspect it is USB rail, there for I asked for the Asmedia chip name, we can see the rail feeds it, thus we could have suspects then.

 

[KedsDead]

It ain't that far. I suspect it is USB rail, there for I asked for the Asmedia chip name, we can see the rail feeds it, thus we could have suspects then.

That would lead to what does he have connected to his computer via USB that would cause that much power draw over that rail. There had to be a short somewhere. If it was the PSU and it shoved 12V down that 5V rail, there would be several burn outs.

If it were me, I would have gotten the MB replaced as well as the PSU, rebuilt it and crossed my fingers..

 

[Worldofsockets]

It ain't that far. I suspect it is USB rail, there for I asked for the Asmedia chip name, we can see the rail feeds it, thus we could have suspects then.

Per the website it’s a ASM1061. I swapped three fans for a sl connector. That’s the only thing that changed.

 

[Dr. Dro]

This is the spot. I haven’t the heart to undo it all just yet, as I’m still pretty upset over the entire thing. Any ideas as to what that chip is doing? Seems like a really strange spot if you ask me.

Under that spot there should be a standoff for some motherboard types you may not have removed while assembling your machine. Easy to miss because it's right underneath the one that practically every motherboard at every form factor uses, I'd triple check this as I have a hunch 95Viper is right on the money with the standoff thing, cheers

(source)

 

[Worldofsockets]

Per the website it’s a ASM1061.

That would lead to what does he have connected to his computer via USB that would cause that much power draw over that rail. There had to be a short somewhere. If it was the PSU and it shoved 12V down that 5V rail, there would be several burn outs.

If it were me, I would have gotten the MB replaced as well as the PSU, rebuilt it and crossed my fingers..

Yep, getting both replaced. Would you still use the new airnfan controller? I’m scared to plug it up after I get these parts.

Under that spot there should be a standoff for some motherboard types you may not have removed while assembling your machine. Easy to miss because it's right underneath the one that practically every motherboard at every form factor uses, I'd triple check this as I have a hunch 95Viper is right on the money with the standoff thing, cheers

Standoff, as in motherboard standoff on the case?

 

[Dr. Dro]

Yep, getting both replaced. Would you still use the new airnfan controller? I’m scared to plug it up after I get these parts.


Standoff, as in motherboard standoff on the case?

On the case, yeah. I updated the post with a diagram, it's on the side where there may be two holes one right below the other, case usually has marked this as a different letter (screw set A, B, or C), this is usually for micro ATX form factor boards. This can short an ATX board if it's present, although anti-surge protection on your motherboard *should* have caught that