I don't what's failing.

May 26, 2009 at 13:59:32
Specs: Windows XP
Well, some day I decided to dismount my Motherboard, to search for a screw that fell inside there, I mounted it again, and connected everything, when I turned it on, I started smelling like plastic burning, so I shut it down inmediately... I tought , oh Maybe I just killed my MOBO T_T, too bad, I got another one from a friend (We tested it at his home), I mounted it and I tested it with a different Power Supply, same thing happened, I tested every component Memories, HDD, and Cards in my other computer, everything is all right, so I don't know. What is really happening.
Can someone help me?

See More: I dont whats failing.

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#1
May 26, 2009 at 14:27:52
Maybe a standoff post is moved or too close to lan.

"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10


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#2
May 26, 2009 at 16:53:49
Do you have the ATX 20-pin power connection or are you using an older AT power supply with the P8 and P9 power connections? You've probably got the ATX but if by chance you have the older AT then you need to make sure you connect P8 and P9 right. If you switch them you'll get a direct short and things will start smelling.

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#3
May 26, 2009 at 17:41:53
On those connections is it 2 reds your dead. Two red or oranges together..... as it is supposed to be the 2 blacks....

I am having a senior moment and darned if I can remember.


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Related Solutions

#4
May 26, 2009 at 19:14:55
I always remembered by putting the edges of P8 and P9 with the black ground wires next to each other, making all the ground wires in the center of the connection.

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#5
May 26, 2009 at 20:48:35
Well, I my UPS has a ATX 20 pin connector, but I was researching and I think it just made a short circuit because it was grounding with the case, what do you think?

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#6
May 26, 2009 at 21:52:04
Sometimes a short is hard to find. You need to examine everything closely and see if you can find it. The mounting studs, as mentioned above, are often the problem but since the board was in there before it wouldn't seem like that was the problem.

Even with the problem, is it booting up or does nothing show on the screen?

You might try taking the motherboard and PSU out of the case and see if you have the same situation. You can touch the 2 'power swtich' pins wth a screwdriver to get it going.

The odor could be coming from the PSU too. We're just assuming that's not it because it was the motherboard that you removed.


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#7
May 26, 2009 at 22:32:27
Actually I unmounted everything and did what you told me to, no more burnt smell, the thing is , I just noticed, every fan of my computer is roasted :O, even though they still work...And yeah, it just turns on for about 2 seconds, and then shutsdown, nothing in the screen.

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#8
May 26, 2009 at 22:53:21
The PSU fan spinning up for a few seconds and shutting down means the PSU is seening something wrong with the motherboard. Or it could mean a bad PSU. So nothing definitive there. A bad motherboard can screw up a power supply, although it's usually the other way around.

You really need to find the short before trying other motherboards.

One other thing, make sure the 115/230 voltage switch on your PSU is set right. DON'T GUESS. In the US it's going to be 115, unless your place is wired weird. Not sure about other countries.


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#9
May 27, 2009 at 20:52:34
Actually I tested it with another power supply and the same thing happened, so I guess the motherboard is damaged, it damaged every fan of my computer :S, too bad. And yeah, It was making contact with the case.

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#10
May 27, 2009 at 21:15:23
At least you found the problem. Be more careful next time.

It's odd it affected the fans. Are you sure they're not just full of dust and maybe look heat-damaged due to long term usage?


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#11
May 28, 2009 at 19:56:56
They were clean, and they all smelt like burnt , It would be a great coincidence if they got damaged at the same time , since there are 4 fans in my case (counting CPU and PSU fans), next time I'll put something under my motherboard.

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#12
May 28, 2009 at 21:55:15
Must have been a problem with the 12 V source then since that's what powers the fans. Unfortunately the drives also use 12 V. I hope they're OK.

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