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Fried CPU or MB?

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Garoxxar

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#1
I recently tried to fix my brother in laws operating system with my computer by hot plugging his hdd drive into my computer. When I did this, it didn't read it, but sparked really bad when I plugged it in. I restart the system and the hdd started sparking like crazy. I unplugged it immediately and the whole system shut down and smelled something burnt, which I think was the hdd because I didn't smell anything IN the case. Now it wont post. I don't see any burnt capacitors, and tried another PSU. Same problem. The lights on the motherboard come on and the fans spin, but immediately shut down after.
What have I fried?!
 
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#2
Most likely the HD and the PSU, but could be anything. You have to test each component separately. I don't know who told you that, but its not how to fix anything
 
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#3
Which system wont post, his or yours?
You may have fried the PCB on the Hard Drive.
Does the system boot to the BIOS without the hard drive connected?
 

eidairaman1

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#5
I never hotplug/swap. I always shutdown.
That means he touched the hot pins before neutral/ground pins, he shorted the controller out on the hdd, possibly smoked the psu too.
 
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#6
I never hotplug/swap. I always shutdown.
And often just shutting down is not enough because the ATX Form Factor standard requires +5Vsb standby voltages be applied to several points across the motherboard when the computer is just "shutdown". Shutdown is not "off". It is really just in standby unless the power supply is unplugged from the wall, or, if it has one, the master power switch on the back of the power supply is switched to off or "0".

In the OP's defense, SATA drives are supposed to be hot-swappable. If you look at the image here:


...note how some of the pins are longer than others. Those are the hot-swappable pins intended to establish a common ground first. "IN THEORY" if a cable connection is properly aligned when inserted, no damage or arcing (sparks) should occur. But that assumes the user is holding the connector straight, and the device connector and cable connector are in perfect condition.

HOWEVER, just because the SATA interface supports hot-swapping, that does not mean the device or the OS does. Most RAID controllers support hot-swapping, many plain motherboard SATA drive interfaces do not. And even if the device is hot-swappable, that does not ensure the OS will recognize it.

The ONLY time I hot-swap RAID drives is on a mission critical server - but I get nervous just thinking about it so I always try to schedule a downtime when possible so I can properly shutdown and power off before disconnecting and connecting hardware. The exception is USB or eSATA connected devices.

@Garoxxar - if the connectors were properly aligned, you should never see any sparks - even if the device itself does not support hot-swapping. So you seeing sparks would suggest there is a short somewhere. The problem you have now is you don't know where and you risk damaging something else.

If me, I would install the suspect drive into an enclosure then hope and pray if the drive is damaged, the USB connection will isolate the short to the enclosure. I would not connect a drive that contains critical data to that motherboard.

That said, Jetster is right. "Hot-swapping" drives is no way to fix an OS, or even to determine if the OS on a drive is corrupt. Whoever led you down that trail needs to be smacked up side the head.
 

Garoxxar

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#7
I appreciate the replies you guys.
I admit I was a bit negligent. In the years of being a computer engineer student I probably got a bit lazy.
With that being said i have bought a new motherboard. I'll post results after i get it in. The CPU doesn't look damaged, and the power supply is fine. I assumed that my BIOS and RAID controllers would handle a hot swap, but I guess not.
 

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#8
It's kind of funny but I've noticed a pattern with all this and seems like anyone that claims that they're an engineer has made some big big big mistakes. next time don't tell us that you're an engineer.

Biggest thing complacency kills just remember that whether it kills you or someone else what destroys expensive equipment
 
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#9
When you said computer engineer this was what I thought of. Anyway good luck

 
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#10
Especially since there is a HUGE difference between a computer engineer and electronics engineer. Sadly, many computer engineers - and computer techs for that matter - think they know how electronics work. Yet show them E=IR and they scratch their heads.

"Ohm" is not a meditative chant!

In defense of some of those, companies are often to blame as many use "engineer" and "technician" in job titles yet the person filling that position does not have a bachelors of science (engineer's) degree, or the necessary associates of science or tech school certifications to be real technicians either.
 
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#11
@Jetster, wow... just wow. I've not laughed so hard in quite some time. Thanks.

Does that make me a bad person?
 
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#12
It's kind of funny but I've noticed a pattern with all this and seems like anyone that claims that they're an engineer has made some big big big mistakes. next time don't tell us that you're an engineer.

Biggest thing complacency kills just remember that whether it kills you or someone else what destroys expensive equipment
I mean I fully admit I'm an engjneer, and all I've done bad is squirt thermal paste everywhere (which I swear was due to a health/arm issue).

It varies. But I guess the point here is everyone messes up. And yes, complacency kills.

Especially since there is a HUGE difference between a computer engineer and electronics engineer. Sadly, many computer engineers - and computer techs for that matter - think they know how electronics work. Yet show them E=IR and they scratch their heads.

"Ohm" is not a meditative chant!

In defense of some of those, companies are often to blame as many use "engineer" and "technician" in job titles yet the person filling that position does not have a bachelors of science (engineer's) degree, or the necessary associates of science or tech school certifications to be real technicians either.
I recognize this as a weakness of mine. But even I know Ohms Law... lol. I did have a brief electronics stint though.
 
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#13
.....companies are often to blame as many use "engineer" and "technician" in job titles yet the person filling that position does not have a bachelors of science (engineer's) degree, or the necessary associates of science or tech school certifications to be real technicians either.
Don't confuse having a "Degree" as a sign of intelligence, it merely shows persistence. Degrees are paid for, not earned.
 
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#15
Don't confuse having a "Degree" as a sign of intelligence, it merely shows persistence. Degrees are paid for, not earned.
LOL. That's definitely not true.

I agree that having degrees is not necessarily a sign of intelligence, but you don't get a degree (from any "accredited" institution anyway) if you don't have some intelligence. And while you have to pay for the education, you definitely do NOT get the degree unless you earned it. Unlike some primary schools, you don't graduate just for attending.

But a degree alone does not make one an expert. Neither does a certification. Experience must be factored in.

But also, swapping out a power supply, added some RAM, or even assembling a few computers does NOT make one a computer expert. Just about anyone can use a #2 Phillips screwdriver and connect a few "keyed" (only go in one way) data and power cables together.
 

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#16
Would everyone just knock it off, this argument is purly ignorant and stupid now.
 
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#18
Closing shop for now.

@Garoxxar If you would like for us to re-open this thread when you get your new motherboard, then just send me a PM.
 
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